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PLS HELP 20 POINTS what is the area of the solid

A : 276 square cm
B:208 square cm

C:272 square cm
D:240 square cm

PLS HELP 20 POINTS what is the area of the solid A : 276 square cm B:208 square cm-example-1

1 Answer

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The answer is D : 240square cm

Work out the area of the triangular face first, then multiply by 2 to get the area of both triangular faces : 6x4 then divide by 2 to get area of a triangle, the multiplied by 2 give 24 cm squared

Work out the area of the 2 slanted rectangles : (7x12)x2 which is 168

Then work out the area of the base rectangle: 12x4 =48
Finally, add them together to get the total surface area which is 240 cm squared
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