Ask questions which are clear, concise and easy to understand.
Ask QuestionPosted by Khushi Dhaliwal 5 years, 3 months ago
- 0 answers
Posted by Akhand Pratap Singh 5 years, 3 months ago
- 1 answers
Yogita Ingle 5 years, 3 months ago
Let ‘a’ be the side of a cube.
Volume of the cube = 512cm3 (Given)
We know volume cube = (side)3
⇒ a^3 = 512
or a = 8
Each side of a cube is 8 cm.
Surface area = 2(lb+bh+hl)
= 2 (16×8+8×8+16×8)
= 640 cm2
Therefore, Surface area of a cube is 640 cm2.
Posted by Hanslekh M 5 years, 3 months ago
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Posted by Hanslekh M 5 years, 3 months ago
- 1 answers
Yogita Ingle 5 years, 3 months ago
For no of hours equal to or more than 3, the equation is y = 10(x-3) + 20
or in simplified form , y = 10x - 10
The cost for five hours = Rs.40
-its given that the cost is 20 for the first 3 hours, so if x=1 or 2 , cost=20
- if the hours are 3 or more than 3, it costs Rs.10 for every extra hour
- This means if x is the no of hours, for each x-3 hours, it costs Rs.10
- Upon this, the cost of first 3 hours is also added
-Hence we get the equation, y= 10(x-3) +20
-To find the cost for 5 hours,
we put x=5 in our equation,
y=10(5-3)+20 = 40
Posted by ꧁༒☬ℜ؏Αꮮ_Ꮶιηgs☬༒꧂ ▄︻┻═┳一 5 years, 3 months ago
- 5 answers
Posted by Sanjita ?? 5 years, 3 months ago
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Posted by Minha Iqbal 5 years, 3 months ago
- 1 answers
Gaurav Seth 5 years, 3 months ago
The question can't be added in an Orthodox manner, but can be added by converting into decimals for this use calculator .
Answer:
Step-by-step explanation:
Therefore,
Posted by Sanjita ?? 5 years, 3 months ago
- 2 answers
Gaurav Seth 5 years, 3 months ago
Simplified form is
Step-by-step explanation:
Since we have given that
We need to expand and then simplify:
We will use the identity:
so, here,
So, our expression becomes,
Hence, simplified form is
Posted by Silent King 5 years, 4 months ago
- 1 answers
Gaurav Seth 5 years, 4 months ago
Given: ∆ABC is an isosceles triangle in which AB = AC.
Side BA is produced to D such that AD = AB.
To Prove: ∠BCD is a right angle.
Proof: ∵ ABC is an isosceles triangle
∴ ∠ABC = ∠ACB ...(1)
∵ AB = AC and AD = AB
∴ AC = AD
∴ In ∆ACD,
∠CDA = ∠ACD
| Angles opposite to equal sides of a triangle are equal
⇒ ∠CDB = ∠ACD ...(2)
Adding the corresponding sides of (1) and (2), we get
∠ABC + ∠CDB = ∠ACB + ∠ACD
⇒ ∠ABC + ∠CDB = ∠BCD ...(3)
In ∆BCD,
∠BCD + ∠DBC + ∠CDB = 180°
| ∵ Sum of all the angles of a triangle is 180°
⇒ ∠BCD + ∠ABC + ∠CDB = 180°
⇒ ∠BCD + ∠BCD = 180°
| Using (3)
⇒ 2∠BCD = 180°
⇒ ∠BCD = 90°
⇒ ∠BCD is a right angle.
Posted by Prerna Sahu 5 years, 4 months ago
- 5 answers
Rudranshu Mishra 5 years, 4 months ago
Posted by Samrat Gundgal 5 years, 4 months ago
- 2 answers
Rudranshu Mishra 5 years, 4 months ago
Yogita Ingle 5 years, 4 months ago
Ratio of the sides of the triangle = 12 : 17 : 25
Let the common ratio be x then sides are 12x, 17x and 25x
Perimeter of the triangle = 540cm
12x + 17x + 25x = 540 cm
⇒ 54x = 540cm
⇒ x = 10
Sides of triangle are,
12x = 12 × 10 = 120cm
17x = 17 × 10 = 170cm
25x = 25 × 10 = 250cm
Semi perimeter of triangle(s) = 540/2 = 270cm
Using heron's formula,Area of the triangle = √s (s-a) (s-b) (s-c)
= √270(270 - 120) (270 - 170) (270 - 250)cm2
= √270 × 150 × 100 × 20 cm2
= 9000 cm2
Posted by Priya Subhashini 5 years, 4 months ago
- 1 answers
Ajjsjsjjdjka Jsjsjsjsja 5 years, 3 months ago
Posted by Ritika Jangra 5 years, 3 months ago
- 3 answers
Neha Jangid ??? 5 years, 4 months ago
Posted by Rucha Nagrale 5 years, 4 months ago
- 1 answers
Gaurav Seth 5 years, 4 months ago
From given, we have,
The side of a cubical watermelon is equal to the diameter of a spherical watermelon.
The volume of a cube = a³
The volume of a sphere = 4/3 πr²
Let us consider the radius of the sphere is "x"
Then, we get
The volume of a cube = (2x)³ = 8x³
The volume of a sphere = 4/3 πx²
let us take, x = 2 cm
Then, we have,
The volume of a cube = 8x³ = 8×2³ = 64
The volume of a sphere = 4/3 πx² = 4/3 × 3.14 × 2² = 16.74
Thus the cubical watermelon would occupy more space than the other
Posted by Aiswarya Ramesh Ramesh 5 years, 4 months ago
- 1 answers
Posted by Damini Damini 5 years, 4 months ago
- 1 answers
Posted by Nishant Singh 5 years, 4 months ago
- 5 answers
My Guide ... 5 years, 4 months ago
Posted by Parmeet Singh 5 years, 4 months ago
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Vijay Giri 5 years, 4 months ago
Posted by Navya. Kanwar 5 years, 4 months ago
- 2 answers
Posted by Aadarsh Kumar 5 years, 4 months ago
- 3 answers
Rudranshu Mishra 5 years, 4 months ago
Riya Kumari 5 years, 4 months ago
Posted by Aarav Sharma 5 years, 4 months ago
- 1 answers
Yogita Ingle 5 years, 4 months ago
curved surface area of the pipe =2(pi)(r)(h)
=2(22/7)(21)(90)
=22/7(21)(45)
=22(21)(45)
=2970
Posted by Surojit Saha 5 years, 4 months ago
- 0 answers
Posted by Aryan Srivastava 5 years, 4 months ago
- 5 answers
Rudranshu Mishra 5 years, 4 months ago
Posted by Santosh Terli 5 years, 4 months ago
- 1 answers
Gaurav Seth 5 years, 4 months ago
Given:
Now the first step will be that we will split the middle term therefore,
=
=
=
=
Posted by Ani Singh 5 years, 4 months ago
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Posted by Ks Chakradhar Danesh 5 years, 4 months ago
- 1 answers
Santosh Terli 5 years, 4 months ago
Posted by Ree Chakz 5 years, 4 months ago
- 5 answers
Posted by Shayna Sharma 5 years, 4 months ago
- 1 answers
Gaurav Seth 5 years, 4 months ago
Draw a line l. Draw a perpendicular to l at any point on l. On this perpendicular choose a point X, 4 cm away from l. Through X, draw a line m parallel to l.
Answer:
To construct: A line parallel to given line when perpendicular line is also given.
Steps of construction:
(a) Draw a line l and take a point P on it.
(b) At point P, draw a perpendicular line n.
(c) Take PX = 4 cm on line n.
(d) At point X, again draw a perpendicular line m.
It is the required construction.
Posted by Bhavana Jc 5 years, 4 months ago
- 1 answers
∆∆∆©¶€¥€¥{°Π°}¥€¥€©¶∆∆∆ . 5 years, 4 months ago
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