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What is the surface area of this triangular pyramid? 7 in 4 in 4 in 4 in 3.5 in​

2 Answers

5 votes

Answer:

88 inches squared

User Andrew West
by
8.4k points
8 votes

Answer:

37 yd²

Explanation:

The computation of the surface area of this triangular pyramid is shown below:

The surface area of this triangular pyramid is

But before that

Lateral area = 3(1 ÷ 2) × base × height

= (3 ÷ 2)(4 yd)(5 yd)

= 30 yd²

Now

base area = 1 ÷ 2 × base × height

= 1 ÷ 2(4 yd)(3.5 yd)

= 7 yd²

Now the total surface area is

surface area = lateral area + base area

= 30 yd² + 7 yd²

= 37 yd²

User Przno
by
8.4k points

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