Question

Jon and Becky measured the circle-shaped part of a sun they drew on the sidewalk.

The diameter of the circle is 56 centimeters. What is the approximate area of the circle? (Use 3.14 for .)
A. 2,461.76 cm2
B. 175.84 cm2
C. 615.44 cm2
D. 9,847.04 cm2

Plz help. Im havin trouble with circumfrence.

Answer 1

if the diameter is 56 cm radius is half of it , which is 28 cm

Answer 2

wait what? But its asking for the WHOLE area of the circle.

Answer 3

\[A = \pi \ r^{2}\]

Answer 4

ohhh

Answer 5

now
r= radius

Answer 6

ohhhhhhhhhhhhh

Answer 7

\[r^{2} = 28 ^{2} = 28 \times 28 = 784\]

Answer 8

radius X 2 is 56 and 56 X 3.14 is 175.84

Answer 9

wait?
Ohhh wait. 28 squared is 28 X 28?

Answer 10

now multiply 784 by the value of phi ( 3. 14)

Answer 11

yes

Answer 12

ok.

Answer 13

wt will u get ?

Answer 14

Ohhh...

Answer 15

2461.76

Answer 16

yes! ... that's the answer!

Answer 17

so A?

Answer 18

yep

Answer 19

Ok :)! Thanks :D!

Answer 20

u r welcome!