Math, asked by samratshreya84, 2 months ago

Find the area of a circle which has radius of 21 cm

Answers

Answered by shriniwas76sn

1

Answer:

Area of a circle = πr²

r = 21 cm

Area= 3.14×21×21

= 1384cm (app.)

Answered by yugam9416

0

Answer:

Area of cicle = Area of sphere

Area of sphere = 4/3pi r^3

Area of sphere = 4/3 × 22/7 × (21)^3

Area of sphere = 40,316.57 cm^2

Previous Question

Next Question

Similar questions

Science, 1 month ago

HOW MANY TYPES OF HUMARE..??

Biology, 1 month ago

what is nucleus? why is it called the powerhouse of a cell.

Math, 1 month ago

if anyone will give answer then i will mark him/her as brainliast ... please give the answer ...

Hindi, 2 months ago

जिन्दगी में कभी उस इंसान को तकलीफ मत देना जो पहले से ही टूटा हो या दर्द में हो क्युकी आपके दौरा दिया गया दर्द नमक का काम कर सकता है...

English, 2 months ago

Read this student’s rough draft. The crew of community helpers descended the riverbank, each member wondering what was in store for their day of service. They wore protective gloves and toted trash bags, and they hoped they could make a difference for the environment. As soon as they reached the clearing by the riverbank, they knew they would be busy. What sentence would best add descriptive...

Math, 8 months ago

A quadratic equation whose zeroes are -3 and -4 is (a) x^2-x+12 (b) x^2-x+12 (c)2x^2+2x+24 (d) None of the above...

Physics, 8 months ago

100. Two long wires carring current i and 2i are placed along co-ordinate axes x and y respectively. The locus of point where magnetic field is zero is 2y-x=0 (2) 2x-y=0 (3) y-x=0 y=0...

Physics, 8 months ago

If dimensions of length are expressed as Gx cy h z , where G, c and h are the universal gravitational constant, speed of light and planck constant respectively (E = hf where E = energy and f = Frequency), then ([G] = M–1L3T–2 [c] = LT–1 [h]=ML2T–1)...