The surface area of the right prism with an isosceles triangle base is 720 inches squared.
Surface area of a triangular prism
surface area = bh + l(x + y + z)
where
- b = base of triangle.
- h = height of triangle.
- l = height of the prism.
- x, y and z are the side of the triangle.
Therefore,
b = 24 inches
h = 5 inches
x = 13 inches
y = 13 inches
z = 24 inches
l = 12 inches
Surface area = 24 × 5 + 12(13 + 13 + 24)
Surface area = 120 + 12(50)
Surface area = 120 + 600
Surface area = 720 inches²
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