Answer:
17.85 feet.
Step-by-step explanation:
Area = 1/4 * 3.14 * r^2 where r is the radius
So r^2 = 19.625 / (1/4 * 3.14)
r^2 = 25
r = 5 feet.
The perimeter = 2r + 1/4 * 2* 3.14*r
= 2*5 + 7.85
= 17.85 feet.
Answer:
15°C
Step-by-step explanation:
Use the following formula to convert Fahrenheit to Celsius:

Substitute the value for the variable and solve for C.

Therefore, 59°F is equivalent to 15°C.
Answer:

Step-by-step explanation:
The given equation is A=4 πr².
We need to solve the above equation for r².
We have,
A=4πr²
Dividing both sides by 4π, we get :

Hence, the value of r² is equal to
.
Answer:
3
Step-by-step explanation: