Question

What is the area, to the nearest tenth, of a circular rug, whose diameter is 3 feet? Use 3.14 for pi.

Answer 1

use the formula

A = pi*r^2

Answer 2

in this case, the diameter is 3 feet, so the radius is 1.5 feet (take half of 3 to get 3/2 = 1.5)

Answer 3

so the answer is 9.4

Answer 4

no

Answer 5

how did you get that?

Answer 6

3.14 times 1.5 times 2

Answer 7

I see, r^2 means r squared

so you don't multiply by 2, you are squaring

Answer 8

If you wanted to multiply by 2, you would say r*2 and not r^2

Answer 9

see the difference?

Answer 10

yeah im new to this and don't get all the little abbreviations and stuff yet

Answer 11

that's ok

Answer 12

so the answers 4.7

Answer 13

A = pi*r^2

A = 3.14*1.5^2

A = 3.14*2.25

A = 7.065

Answer 14

following PEMDAS, you are supposed to square first, then multiply

Answer 15

ok

Answer 16

What is the area, to the nearest tenth, of a circular rug, whose diameter is 3 feet? Use 3.14 for pi.




A.
4.7 square feet



B.
7.1 square feet



C.
9.4 square feet



D.
18.8 square feet

Answer 17

you have to round 7.065 to the nearest tenth it looks like

Answer 18

7.1

Answer 19

good