D, 7-7 = 0
1-1 = 0
0 x 0 = 0
Answer:
55
Step-by-step explanation:
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Divide the nonagon radially into 9 congruent, equilateral isosceles triangle. Each triangle has vertex angle of 360°/9 = 40°.
Interior angle of polygon = 180°-40° = 140°.
Sum of interior angles = 9(140°) = 1260°
Answer:
The formula for the volume of a pyramid is one third of the length times the width times the height.
Step-by-step explanation:
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