CBSE > Class 07 > Mathematics | CBSE Board | Homework Help

Perimeter of square= 4 × side ; perimeter of rectangle 2(length × breadth) ; perimeter of an equilateral triangle= 3 × side ; perimeter of a scalene/isosceles triangle= sum of all sides ; perimeter of any regular figure= No. of sides it has × length of side; perimeter of a circle= 2πr or πd

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the construction of the first 45% of road cost rupees to 250000 remaining part of the road costed at 20% more to build what was the total cost of the road

Posted by Avinash Kumar 5 years, 11 months ago

CBSE > Class 07 > Mathematics

0 answers

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27/-81 in standard form is________________.

Posted by Aziz Satani 5 years, 11 months ago

CBSE > Class 07 > Mathematics

2 answers

Rohit Agrawal 5 years, 11 months ago

27/-81=9/-27 = 3/-9 =1/-3

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Naman Ahden 5 years, 11 months ago

1/-3 or -1/3

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Identify like terms in the following (a) -xy2,-4yx2,8x2,2xy2,7y,-11x2,100x,-11yx,20x2y,-6x2,y,2xy,3x

Posted by Narpath Singh 5 years, 11 months ago

CBSE > Class 07 > Mathematics

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Find the area of rectangular plot one side of which measure 35m and the diagonal is 37m

Posted by Mohit Raj 5 years, 11 months ago

CBSE > Class 07 > Mathematics

1 answers

Rohit Agrawal 5 years, 11 months ago

by Pythagoras theorem H square = B sq. + P sq. where h is hypotenuse and B is base and P is perpendicular 37 sq. = 35 sq. + P sq. 1369 = 1225 + P sq. 1369 - 1225 =P sq. 144 = P sq. P = √144 P = 12 m (ANS)

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A rectangular park is 35m long and 20m wide.A path 2 m wide is constructef outside the park.Find the area of the path

Posted by Rudraksh Gautam 5 years, 11 months ago

CBSE > Class 07 > Mathematics

2 answers

Raj Kapoor Bansal 5 years, 11 months ago

I am sankalp I am sending you ans of this ouestion

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Raj Kapoor Bansal 5 years, 11 months ago

Lenght of rec= 35m Breaght of rec= 20m Area of rec= L*B = 35*20 =700m Lenght of rec with path= 35+2+2=39m Breaght of rec with path= 20+2+2=24m Area of rec with path=L*B= 39*24=936m 936m. Ans

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Find the area of square park whose perimeter is 320

Posted by Balram Sharma 5 years, 11 months ago

CBSE > Class 07 > Mathematics

3 answers

Debashrita Sahoo 5 years, 11 months ago

Perimeter =320 Side=320/4=80 Area =s² =80² =6400cm²

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Anita Kumari 5 years, 11 months ago

P= 4× side 320= 320÷ 4 = 80 cm Area= side × side = 80 × 80 6400cm2

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Yogita Ingle 5 years, 11 months ago

P = 4 × side
320 = 4 × side
side = 320/4
= 80 cm
So area=s²
= 8 0 × 80
= 6400 cm²

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How to find cost in chapter perimeter

Posted by Balram Sharma 5 years, 11 months ago

CBSE > Class 07 > Mathematics

1 answers

Rohit Agrawal 5 years, 11 months ago

cost = Area * Rate

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How to draw a perpendicular?

Posted by Samidha Gupta 5 years, 11 months ago

CBSE > Class 07 > Mathematics

1 answers

Rohit Agrawal 5 years, 11 months ago

step 1- draw a line segment of given measurement AB step 2- with A as centre draw a arc step 3- with B as centre draw a arc that cuts the previous arc step 4- join it

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how to contruct 30 degree angle

Posted by Rajveer Jat 5 years, 11 months ago

CBSE > Class 07 > Mathematics

1 answers

Rohit Agrawal 5 years, 11 months ago

step 1- draw a line segment OB step 2- with O as centre draw a semi circle step 3- with O as centre draw a arc of 60degree step 4- join the angle with O step 5- with C as centre draw a arc step 6- with d as centre draw a arc that cuts previous arc step 7- join it

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Sample test paper 2 -q.no 5

Posted by Ranjit Singh Sekhon 5 years, 11 months ago

CBSE > Class 07 > Mathematics