Question

http://prntscr.com/60znzb

Answer 1

For the first one, the formula is \(\Large\pi{r^2}\)

Answer 2

It doesn't give us the radius, it gives us the diameter, but we know the radius is half the diameter, so what is the radius? @bohotness

Answer 3

For the first one, use the formula A = pi*r^2

The r (radius) is half of the diameter, so the r is 7 inches

So we have A = 3.14*7^2

So, what do we do first to solve this?

Answer 4

The diameter is 14, so to find the radius, you can divide 14 \(\div\) 2.

Answer 5

3.14 times 7 then times it again or times it by 2 or 3.14

Answer 6

And what do you think #2 is and why?

Answer 7

Nope, you must do the exponent 7^2 first

7^2 = 7 x 7

So what is 7 x 7?

Answer 8

the first one is wrong...

Answer 9

It isn't A.

Answer 10

79

Answer 11

No, 7 x 7 isn't 79. Try again

Answer 12

sorry i meant 49

Answer 13

Yes, and what is 49 x 3.14?

Answer 14

@bohotness

Answer 15

153.86

Answer 16

Yes, so what is your answer?

Answer 17

b for 1

Answer 18

Yup. I am not sure about the second one, so you can ask that one in a different post. :)

Answer 19

i dont understand the sec one

Answer 20

k