Question

A glass fish tank is shaped like a triangular

prism. Each base of the aquarium is an
isosceles triangle with dimensions shown.
The tank has a height
of 12 inches. What is
the total surface area
of the tank in square
inches?

answers:
work: 36(12) + 2(48)
solution: 528

work: 36(6) + 2(48)
solution: 312

Answer 1

Explanation:

Area of the TWO ends are each 1/2 b*h = 1/2 * 16 * 6 =48 in^2

TWO of them would be 2 * 48 = 96 in^2

Then there are 3 sides

two are 10 * 12 = 120

two would be 120 x 2 = 240 in^2

and ONE side 16 * 12 = 192 in^2

Total area is then 96 + 240 + 192 = 528 in^2