alyssaasheltonn765 alyssaasheltonn765

07-12-2021
Mathematics

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Can someone plzzzz help you have to enter the answer like this:26 but that is not the answer

Can someone plzzzz help you have to enter the answer like this26 but that is not the answer class=

Respuesta :

mhanifa mhanifa

07-12-2021

Answer:

84 cm²

Step-by-step explanation:

Total surface consists of 2 right triangles and 3 rectangles.

Sum of their areas is the total surface area.

Area of 2 triangles:

A = 2*(1/2)*4*3 = 12 cm²

Area of 3 rectangles:

A = 6*(3 + 4 + 5) = 6*12 = 72 cm²

Total surface area:

S = 12 + 72 = 84 cm²

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