Question

HELP ASAP!! Sorry if it’s hard to see. The second answer options are, 4.15, 2.33, 17.2

Answer 1

r =
`\sqrt{(A)/(\pi ) }`

r = 17.2 cm

Explanation:

∵ The area of the circle A = πr²

∴ r² = A/π

∴ r = √(A/π)

∵ A = 54 cm²

∵ π = 22/7

∴ r = √(54/(22/7)) = √(54×7/22) = 17.2 cm