To solve for radius use the volume formula and solve for r.
V = πr²h
320π = πr²(20)
320π/π = 20r²
320 = 20r²
320/20 = r²
16 = r²
√16 = r
4 = r
Answer is D. 4 feet.
Hope this helps :)
Answer:
Step-by-step explanation:
85 - 70 = 15
15/70 = 0.21428571428
Round to .21
Move decimal over twice to the right
21%
Area of a triangle is calculated by using the formula A=1/2bh
A= 1/2 (8.2) (5)
A=1/2 (41)
A=20.5 or 20 1/2, whichever way you think your teacher wants it.
Answer:
3^(n+1) - 3^n / 3^(n-1) = 6
