Answer:
its A C and E hope this helps
Step-by-step explanation:
h = 21 unit ;
Volume = 630 unit³
Given that :
Base area, B = 6 units²
Volume = 63 units³
Volume of triangular prism :
63 = 1/2 * base area * height
63 = 0.5 * 6 * h
63 = 3h
h = 63/3
h = 21 m
Volume of pentagonal prism :
V = 1/2(5 * side * apothem) * height
(1/2 * 5 * 6 * 2) * 21
(5 * 3 * 2 * 21)
= 630 unit³
283.495
18.84
The formula for circumference is 2(pi)r, I think. The radius is 3. 3 times 2 is 6. 6 times 3.14 is around 18, I think.