Find the volume of a pyramid with a square base, where the side length of the base is 8.7\text{ cm}8.7 cm and the height of the pyramid is 13.1\text{ cm}13.1 cm. Round your answer to the nearest tenth of a cubic centimeter.

area of part 1:

a1=base*height/2=(8+2)*(8-2-2-1)/2=10*3/2=15 ft^2

area of part 2:

a2=length*width=(8+2)*1=10 ft2

area of part 3:

a3=length*width=8*2=16 ft2

total shaded area : a1+a2+a3=41 ft2

total area of the reactangle : a=16*8=128 ft2

total area of the nonshaded region : 128-41=87 ft2

answer: 10 meter

step-by-step explanation:

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step-by-step explanation:

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