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The diognals of rhombus measure 16cm and 30 cm. Find its perimeter

Posted by Geeta Sharma 6 years, 3 months ago

CBSE > Class 07 > Mathematics

3 answers

Prince Kumar 6 years, 3 months ago

68

Yogita Ingle 6 years, 3 months ago

Now by seeing this attached picture we can say that 8 cm +8 cm = 16 cm and 15 cm + 15 cm = 30 cm...
since diagonal of a rhombus bisects each other
now by applying Pythagoras theorem we get,
h² = p² + b²
h² = 8² + 15²
h² = 64 + 225
h² = 289
h = √289
h = 17
therefore perimeter of the rhombus ,
= 4 * side
= 4 * 17
= 68 cm
therefore perimeter of the rhombus = 68 cm

Payal Bansal 6 years, 3 months ago

Hii

ANSWER

75 % of 1 kg mango

Posted by Ayush Pratap 6 years, 3 months ago

CBSE > Class 07 > Mathematics

3 answers

Abhijeet Chaudhary 6 years, 3 months ago

1kg=1000g 25%of 1 kg=250g 50% of 1 kg=500g So,75% of 1kg =750g Therefore, the answer is 750 g

Owaise Irfan 6 years, 3 months ago

750g

Kshitij Kumar 6 years, 3 months ago

75℅ of 1kg mango =0.75kg or 0.075 g 75℅ of 1kg mango =75/100×1 =3/4kg or 0.75 kg Now, 3/4×1000(because 1kg =1000grams) =750g

ANSWER

hari bought 20 kg of rice at $ 36 and 25 kg of rice at $ 32 per kg . he mixed the two varieties and sold the mixture at $ 38 per kg . find his gain per cent in the whole transaction ... chapter profit and loss

Posted by Dev Sharma 6 years, 3 months ago

CBSE > Class 07 > Mathematics

0 answers

ANSWER

To what power should(-2) be raised to get 64

Posted by Diksha Singh 6 years, 3 months ago

CBSE > Class 07 > Mathematics

2 answers

Soni Bitra 6 years, 3 months ago

To the power of 6 2*2*2*2*2*2=64

Yogita Ingle 6 years, 3 months ago

(-2)⁶ be raised to get 64 .

ANSWER

If meenu givesan intrest of rupees 45 for one years at 9 per cent rate p.a. what is the sum she borrowed

Posted by Subhash Chandra Sharma 6 years, 3 months ago

CBSE > Class 07 > Mathematics

0 answers

ANSWER

5x - 7 = 23 2

Posted by Huma786Khalil Khalil 6 years, 3 months ago

CBSE > Class 07 > Mathematics

6 answers

Huma786Khalil Khalil 6 years, 3 months ago

I said question is wrong

Santosh Kumrawat 6 years, 3 months ago

-35

Santosh Kumrawat 6 years, 3 months ago

23

Huma786Khalil Khalil 6 years, 3 months ago

But the question wrong

Huma786Khalil Khalil 6 years, 3 months ago

Thanks

Arushi Mittal 6 years, 3 months ago

X=45

ANSWER

If the LCM of three numbers is 9570,then their HCF is

Posted by Tiki Sahu 6 years, 3 months ago

CBSE > Class 07 > Mathematics

2 answers

Santosh Kumrawat 6 years, 3 months ago

No write question

Prince Kumar 6 years, 3 months ago

Wrong Que

ANSWER

2x-1=3

Posted by Pallavi Biradar 6 years, 3 months ago

CBSE > Class 07 > Mathematics

5 answers

Santosh Kumrawat 6 years, 3 months ago

No -2

Aditya Mehta 6 years, 3 months ago

X=2

Owaise Irfan 6 years, 3 months ago

X=2

Arushi Mittal 6 years, 3 months ago

X=2

Ashutosh Katyan 6 years, 3 months ago

x = 2

ANSWER

Examine whether you can construct triangle DEF such that EF =7.2cm, m<E=110°and m<F =80°.Justify your answers

Posted by Deepak Kapoor 6 years, 3 months ago

CBSE > Class 07 > Mathematics

0 answers

ANSWER

What is pythogoram theorm ?

Posted by Home Stay 6 years, 3 months ago

CBSE > Class 07 > Mathematics

2 answers

Santosh Kumrawat 6 years, 3 months ago

It's the name of founder

Gaurav Seth 6 years, 3 months ago

Pythagoras Theorem

Statement: In a right angled triangle, the square of the hypotenuse is equal to the sum of squares of the other two sides.

Given: A right triangle ABC right angled at B.

To prove: AC² = AB² + BC²

Construction: Draw BD AC

Proof :

We know that: If a perpendicular is drawn from the vertex of the right angle of a right triangle to the hypotenuse, then triangles on both sides of the perpendicular are similar to the whole triangle and to each other.

ADB ABC

So, (Sides are proportional)

Or, AD.AC = AB²... (1)

Also, BDC ABC

So,

Or, CD. AC = BC²... (2)

Adding (1) and (2),

AD. AC + CD. AC = AB² + BC²

AC (AD + CD) = AB² + BC²

AC.AC = AB² + BC²

AC² = AB² + BC²

Hence Proved.

OR

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</div>

ANSWER

Find the Area of the rectangle which one of it side is 40cm and one of its diagonal is 41cm

Posted by Sidhant Kumar Dash 6 years, 3 months ago

CBSE > Class 07 > Mathematics

2 answers

Santosh Kumrawat 6 years, 3 months ago

?

Gaurav Seth 6 years, 3 months ago

In Δ ACD

AB = CD = 40 CM

AD=41 CM

∠ACD = 90° ( RECTANGLE HAS 90° ON ALL THE BOTH SIDES)

By Pythagoras theorem

AD² = AC² + CD²

AD² - CD² = AC²

(41)² - (40)² = AC²

1681 - 1600 = 81 = AC²

√81 = AC

AC = 9 CM

Perimeter of Rectangle ABCD = 2 (l+b)

= 2(40 + 9) = 2(49) = 98 CM

ANSWER

Pythagoras Theoram

Posted by Ishita Pathak 6 years, 3 months ago

CBSE > Class 07 > Mathematics

2 answers

Santosh Kumrawat 6 years, 3 months ago

Name of founder

Raunak Yadav 6 years, 3 months ago

Dyyu

ANSWER

Mathmatics

Posted by Sonu Kumar 6 years, 3 months ago

CBSE > Class 07 > Mathematics

2 answers

Ruby Agarwal 6 years, 3 months ago

Thanks0

Khemesh Bisen 6 years, 3 months ago

Mathmatics to divide, multiply, subtract, Addition ,

ANSWER

What is range,mode and median??

Posted by Mehvish Ahmed 6 years, 3 months ago

CBSE > Class 07 > Mathematics

2 answers

Arushi Mittal 6 years, 3 months ago

Range=highest value - lowest value Mode=in mode arrange the values in ascending order and see how many a number is coming highest from every no. Median=in this we have to see which is middle number this is clled median

Sachin Sharma Sharma 6 years, 3 months ago

Range =maximum value - minimum value Mode is the most frequent number

ANSWER

How many faces , vertices and edges of sqare pyramid ?

Posted by Ashutosh Katyan 6 years, 3 months ago

CBSE > Class 07 > Mathematics

2 answers

Kasthuri Nayak 6 years, 3 months ago

Sqare pyramid have;4faces,8edeges,4vertex

Neha Gupta Guptaneha 6 years, 3 months ago

4 faces 8 edges 4 vertixe

ANSWER

11111111×11111111=?

Posted by Dhyeyscience Center 6 years, 3 months ago

CBSE > Class 07 > Mathematics

4 answers

Santosh Kumrawat 6 years, 3 months ago

1.234568e14

Abhijeet Chaudhary 6 years, 3 months ago

123,456,787,654,321

Pragya Gupta 6 years, 3 months ago

1.23456788e14

.. ... 6 years, 3 months ago

1.23456788e14

ANSWER

288888×277789485

Posted by Saroj Bhatnagar 6 years, 3 months ago

CBSE > Class 07 > Mathematics

2 answers

Santosh Kumrawat 6 years, 3 months ago

8.025005e13

Sandeep Singh 6 years, 3 months ago

288888×277789485=80250048742680

ANSWER

ABC is a triangle right-angled at c if ab=25cm and ac=7cm find bc

Posted by Devanshi Jindhad 6 years, 3 months ago

CBSE > Class 07 > Mathematics

1 answers

Prannoy Chandola 6 years, 3 months ago

∆ABC C=90° AB=HYPOTENUSE=25CM AC=7CM CB=? SO BY HYPOTENUSE RULE... H^2 = A^2 + B^2 SO HERE,, H^2 = (25)^2 + (7)^2 THAT IS,, H^2 = 625 + 49 H^2 = 674 THEN,,,, H = √674 H = 25.96151 THEREFORE,,,,,, HYPOTENUSE THAT IS AB ......AB=25.96151 CM ........

ANSWER

What is variable ??

Posted by Santosh Dey 6 years, 3 months ago

CBSE > Class 07 > Mathematics

7 answers

Santosh Kumrawat 6 years, 3 months ago

Alphabet's

Mansi Lakwal 6 years, 3 months ago

Variables are a to z

Ruby Agarwal 6 years, 3 months ago

2

Kasthuri Nayak 6 years, 3 months ago

Variables are x,y,z,a,b,c,d

Pragya Gupta 6 years, 3 months ago

Variable is a number which do not have a fix value. Some popular variables are x,y

Parveen Kumar 6 years, 3 months ago

Like x,y,z,a,b anything

Parveen Kumar 6 years, 3 months ago

Variables are consonants

ANSWER

16power15 divide 16power19

Posted by Kanhaiya Roy 6 years, 3 months ago

CBSE > Class 07 > Mathematics

2 answers

Pragya Gupta 6 years, 3 months ago

16 power 4

Prannoy Chandola 6 years, 3 months ago

16^15 ÷ 16^19 .....So here the exponents&powers rule is used.....SO----16^15+19........HERE ..15-19=-4......Hence,,,,16^15÷16^19,,,,,,,IS EQUAL TO== 16^-4...

ANSWER

3(s-6)+4=6s-7

Posted by Ananya Srivastava 6 years, 3 months ago

CBSE > Class 07 > Mathematics

2 answers

Prannoy Chandola 6 years, 3 months ago

3(s-6)+4=6s,,,,,, 3s-18+4-6s+7=0,,,,,, -3s-7=0,,,,,,,, So,,,,S=-7/3.......

Ramshyam Patil 6 years, 3 months ago

S=34

ANSWER

(-36)+(67)-34

Posted by Pranay Kansotia 6 years, 3 months ago

CBSE > Class 07 > Mathematics

5 answers

Pranay Kansotia 5 years, 10 months ago

Correct

Santosh Kumrawat 6 years, 3 months ago

-3

Kunal Manjhani 6 years, 3 months ago

Find the mean of first ten multiples of 10

Anshika Gupta 6 years, 3 months ago

(-36)+67-34 =(-36)-34+67 =-70+67 Answer =-3

Shiva Nandan Dilip 6 years, 3 months ago

-3

ANSWER

45-(+56)-58+(35)+34

Posted by Pragya Gupta 6 years, 3 months ago

CBSE > Class 07 > Mathematics

4 answers

Pragya Gupta 6 years ago

Please tell me the whole process?

Santosh Kumrawat 6 years, 3 months ago

0

Shiva Nandan Dilip 6 years, 3 months ago

114-114 0

Yogita Ingle 6 years, 3 months ago

45-(+56)-58+(35)+34
= 45 - 56 - 58 + 35 + 34
= 114 - 114
= 0

ANSWER

6×6(2×2)4÷8(34+7

Posted by Sahil Singh 6 years, 3 months ago

CBSE > Class 07 > Mathematics

3 answers

Santosh Kumrawat 6 years, 3 months ago

2,952

Pragya Gupta 6 years, 3 months ago

7.02

.. ... 6 years, 3 months ago

349.714286

ANSWER

उलटा त माता लैब

Posted by Isha Soni 6 years, 3 months ago

CBSE > Class 07 > Mathematics

0 answers

ANSWER

-42 + -13

Posted by Pranav?? Hunashikatti 6 years, 3 months ago

CBSE > Class 07 > Mathematics

9 answers

Santosh Kumrawat 6 years, 3 months ago

-55

Abhijeet Chaudhary 6 years, 3 months ago

It's answer is-55

Arushi Mittal 6 years, 3 months ago

-55

Mehvish Ahmed 6 years, 3 months ago

-55

Anshika Gupta 6 years, 3 months ago

-42+ -13 =-55

Pragya Gupta 6 years, 3 months ago

-55

Vedant Rawat 6 years, 3 months ago

Answer = -55

Yogita Ingle 6 years, 3 months ago

-42 +( -13 ) = -42 -13 = - 55

Pranav?? Hunashikatti 6 years, 3 months ago

-29

ANSWER

2364249438976549844-4287947287455855555= and821644564442145+(455)-457541(451)= what is the answer for this question

Posted by Daisyreshika Rani 6 years, 3 months ago

CBSE > Class 07 > Mathematics

1 answers

Santosh Kumrawat 6 years, 3 months ago

000000

ANSWER

All chapter questions

Posted by Raj Singh 6 years, 3 months ago

CBSE > Class 07 > Mathematics

0 answers

ANSWER

All questions

Posted by Raj Singh 6 years, 3 months ago

CBSE > Class 07 > Mathematics

0 answers

ANSWER

Munna but three pencils of cost rupes 7 each how many pencils will he buy in rupes 6690

Posted by Vishva Tyagi 6 years, 3 months ago

CBSE > Class 07 > Mathematics

2 answers

Santosh Kumrawat 6 years, 3 months ago

46,830

Pranav?? Hunashikatti 6 years, 3 months ago

Divide it by 7

ANSWER

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