Mathematics, 06.10.2019 06:00 olallaaguirre

Mandy needs to paint all the faces and the base of a model pyramid she made for her history project. the dimensions of the pyramid are shown here. what is the total surface area of the pyramid?

a square pyramid is shown. the side of the square is 10 inches. the height of the triangular faces is 9 inches.

a. 190 in2
b. 280 in2
c. 380 in2
d. 460 in2

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