Question

help me plz with these questions.   the picture is question 1 and the written on is question 2.

The base area of a prism is 150 square feet. Its height is 8 feet. What is the volume of the prism?

  A. 1200 ft3   B. 600 ft3   C. 400 ft3   D. 158 ft3

Answer 1

`1.\\ V=(1)/(3)\pi r^2H\\\\r=12cm;\ H=8cm\\\\substitute\ to\ V:\\\\V=(1)/(3)\pi\cdot12^2\cdot8=(1)/(3)\pi\cdot144\cdot8=\pi\cdot48\cdot8=384\pi\ (cm^3)\\\\384\pi\ cm^3\approx384\cdot3.14\ cm^3=1205.76\ cm^3\approx1206\ cm^3\\\\Answer:A`




`2.\\A_b=150\ ft^2\\\\H=8\ ft\\\\V=A_b\cdot H\\\\V=150\cdot8=1200\ (ft^3)\\\\\\Answer:A`