If the area of a circle is 7.1 M Square what is the diameter?

16.0

Step-by-step explanation:

area of a circle = π r square or π d

so 7.1 square = 22/7*d

50.41 = 22d/7

cross multiply

50.41*7=22d

352.87=22d

divide both sides by 22

22d/22=352.87/22

d=16.0

answer:   28.56 feet (approx)

step-by-step explanation:

since, triangle abc has measure of angle c equal to 55 degrees, measure of angle abc equal to 90 degrees, and length of bc equal to 20 feet.

we have to find out the measurement of segment ab.

therefore, tan 55° =

but bc = 20 feet.

⇒ tan 55 ° =  

⇒ ab = 20 × tan 55 °

⇒ ab = 20 × 1.42814800674

⇒ ab = 28.5629601348   ≈ 28.56 feet