87.6 square inches
Find the area of each face and add them all up together:
Area of triangular base- 1/2 • 6 • 5.2 = 15.6 in2
Area of 1 triangle side face:1/2 • 8 • 6 = 24 in2
Multiply 24 by 3 (bcos there are 3 triangular lateral faces) 24 • 3= 72
Add area of base and arae of all lateral faces:
72 + 15.6 = 87.6
SURFACE AREA: 87.6 square inches
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- SpaceMarsh
