Find the volume of a pyramid with a square base, where the perimeter of the base is 6.9\text{ cm}6.9 cm and the height of the pyramid is 6.4\text{ cm}6.4 cm. Round your answer to the nearest tenth of a cubic centimeter.

step-by-step explan mxfcg'k; uafwgzfgjhklhgation:

the square root of what number? if you add that, then someone will probably answer the question.

answer: (c) m∠qpo + (2x + 16)° = 180°

step-by-step explanation:

the opposite angles of a quadrilateral are supplementary.

so, ∠o + ∠q = 180°   and   ∠p + ∠r = 180°

since ∠r = 2x + 16°, we can use substitution as follows:

∠p + ∠r = 180°

∠p + (2x + 16)° = 180°