What is the area of the triangular floor space enclosed by the glass tetrahedron? Round to the nearest tenth of a square foot. Enter only the number. (Hint: Look at the green triangle to find the base, b, of each green triangle. Because b is also the hypotenuse of the right triangle formed by dividing the base triangle into half, you can use this and Heron's formula for the area of the triangle.)

Question

Azaria Galvan

Mathematics

14 June, 12:29

What is the area of the triangular floor space enclosed by the glass tetrahedron? Round to the nearest tenth of a square foot. Enter only the number. (Hint: Look at the green triangle to find the base, b, of each green triangle. Because b is also the hypotenuse of the right triangle formed by dividing the base triangle into half, you can use this and Heron's formula for the area of the triangle.)

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Rashad Hurst · Answer 1

tan (35) = 105/x where x is one of the sides.

x = 150 ft

Height of base triangle = √ (150^2 - 130^2) = 74.83 ft

Area = (1/2) (base) (height) = (1/2) (260 ft) (74.83 ft) = 9728 ft^2