BRAINLIST

The diameter of a circle is 28.26 ft. What is the area?

pi(14.13)^2 ft^2

Step-by-step explanation:

Area = pi(r)2

where diameter is 2(r), so r is 1/2 of diameter.

So area is pi(14.13)^2 ft^2

A≈627.24ft²

Step-by-step explanation:

dDiameter = 28.26

Using the formulas

A=πr2

d=2r

Solving for A

A=1 4πd2=1 4·π·28.262≈627.24065ft²

7. d. 64

8. i. 32

9. c. 125

10. j. none of the above

11. d. 81

12. i. 216

13. e. none of the above

14. g. 240

15. e. none of the above

16. g. 32

17.   e. none of the above

the answer is b.

step-by-step explanation:

by the trigonometric ratio tangent, tangent equals opposite divided by adjacent.

therefore, tan(50) equals ac/3

multiply each side by 3 to get: ac=3tan(50)

the answer is b.