Question

Hii i have to retake this test and i have no idea if im getting this right, can someone help me out please????

here is the question:

The volume of this cylinder is approximately 12,468.94 cubic feet.

The radius is ___ feet.

Use ​ ≈ 3.14.

image is also pasted

Answer 1

r=19

Explanation:

`12468.94 = (3.14) {r}^(2) (11) \\ (12468.94)/(34.54) = \frac{34.54 {r}^(2) }{34.54} \\ √(361) = \sqrt{ {r}^(2) } \\ 19 = r`

Answer 2

radius = 19 ft

Explanation:

volume of a cylinder: r²πh

12468.94 = r²π × 11

=> r² = 12468.94 ÷ 11π

=> r² = 361

=> r = 19