Question

Find the area and the circumference of a circle with radius of 5. Use the value 3.14 for pie and round your answers.

Answer 1

use the formula :
area = pi r^2
circumference = 2pi r

Answer 2

am i multiplying the radius to get my answer? And am i multiplying 2 times 3.14 times 5 to get my answer for the circumference@RadEn

Answer 3

for to get its area, we multiplying the radius with r squared, it means :
area = 3.14 * 5^2 = 3.14 * 5 * 5 = ....

Answer 4

i got 78.5 for the radius @RadEn

Answer 5

yes, that right... that is the area of circle

Answer 6

so if i round it would be 78 right @RadEn

Answer 7

yeah... btw, what about u with circumference, did u got it ?

Answer 8

ur steps were right, multiplying 2 times 3.14 times 5
C = 2 * 3.14 * 5 = ...

Answer 9

okay but i need area

Answer 10

@RadEn

Answer 11

u got its area = 78.5, right ? :)

Answer 12

but what is the circumference ? @RadEn

Answer 13

C = 2 * 3.14 * 5 = ... ?

Answer 14

31.4 i got @RadEn

Answer 15

yup, that's right

Answer 16

is it m2 or m3 units? @RadEn

Answer 17

actually, for area its unit use m2
and circumference just m not m2 or m3