Question

The formula below gives A, the area of a circle with radius r.

A(r)=πr^2

To the nearest hundredth, what is the value of A(8)? (Use 3.14 for π.)

A)25.12
B)631.01
C)50.24
D)200.96

Answer 1

\[A(r) = \pi (r^2)\]

Here put r = 8 in this formula and solve further..
Can you do it??

Answer 2

no this is hard :(

Answer 3

See,
\[A(8) = \pi \times 8^2\]

Now can you solve?

Answer 4

Tell me what is 8 squared??

Answer 5

64

Answer 6

Yes and what is the value of pi given in question?

Answer 7

3.14

Answer 8

YES ITS D :D

Answer 9

so now,

\[A(8) = (3.14) \times 64\]

Can you go further to get the answer..

Answer 10

ty ty tytty

Answer 11

Yes you are right It is D..

Answer 12

Welcome dear..