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Find the surface area of the pyramid.

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The base of a pyramid is a square whose sides are 12 centimeters long. The height of each triangular face of th pyramid is 15 centimeters. Find the surface area of the pyramid.

asked Sep 9, 2018 in ALGEBRA 2 by abstain12 Apprentice

1 Answer

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Given that

The base of a pyramid is a square whose sides = 12cm

The height of each triangular face of the pyramid = 15 cm

Perimeter of the base (square) = 4 X 12 = 48

Surface area of the pyramid  =  (Perimeter of the base / 2) X Slant Height  + Area of the Base

Substitute corresponding values

Surface area of the pyramid  =  (48 / 2) X 15 + (12^2)

                                              =  (24) X 15 + 144

                                              =  360 + 144

                                              =  504 cm^2

Answer :

Surface area of the pyramid  is 504 cm^2.

answered Oct 6, 2018 by homeworkhelp Mentor

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