Answer:
Step-by-step explanation:
<u>Given information</u>
Height = 2 m
Base = 5 m
Length = 15 m
<u>Given the formula for Triangular Prism Volume</u>
<u>Substitute values into the formula</u>
<u>Simplify by multiplication</u>
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Answer: 72°, 108°, 108°
<u>Step-by-step explanation:</u>
Vertical angles are congruent (equal) so if one angle is 72° then its vertical angle is also 72°.
A vertical angle and its adjacent angle form a 180° angle, so the other two angles are each 180° - 72° = 108°
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<em>see image below</em>
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So it's x^2+3x-28