leeplott4747
05.05.2020 •
Mathematics
A triangular prism. The rectangular sides are 8 inches by 4 inches, 8 inches by 5 inches, and 8 inches by 3 inches. The triangular sides have a base of 4 inches and height of 3 inches.
The area of each triangular base is:
A = 1/2(b)(h) A = 1/2(4)(3)
A = in.2
There are two bases, so total base area is in.2.
The lateral area is:
A = 8(4) + 8(3) + 8(5)
A = in.2
The total surface area is in.2.
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Ответ:
The area of the square base is 114 in. 2
The area of each triangular face is 66 in. 2
Gabriel will need 408 in. 2 of paint