Well, since you’re calculating volume, you would use the formula for the formula of a prism, which is V=Bh.
B is the base, in this case it’s a square, so: B=17.7*17.7, which equals B= 313.29.
So now, we apply the base to the volume formula. V= (313.29)(17.7)
V= 5,545.233
Rounded, it would be
V=5,545.2 in^3
4. D
5. A
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Given that the angle is 25 degrees, we shall apply cosine rule to solve this question.
c^2=a^2+b^2-2abcosC
thus plugging the values we get:
15^2=x^2+20x^2-40xcos25
x^2-36.252x+175=0
thus solving the quadratic using quadratic formula we obtain:
x=[36.252+/-√614.208]/2
x=5.7 km or 30.5 km
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