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Doss [256]
3 years ago
12

Find the lateral area for the pyramid with the equilateral base.

Mathematics
2 answers:
Dafna11 [192]3 years ago
7 0

Answer:

Option A is the correct answer.

Explanation:

 The given pyramid has 3 lateral triangular side as shown below.

 Base of triangle = 12 unit

 We need to find perpendicular.

  By Pythagoras theorem we have

            Perpendicular² = 10²-6²

           Perpendicular = 8 unit

So area of 1 lateral triangle = 1/2 x Base x Perpendicular.

                                             = 1/2 x 12 x 8 = 48 unit²

Area of lateral side = 3 x 48 = 144 unit²    

Option A is the correct answer.                

Anvisha [2.4K]3 years ago
6 0

Answer:

A

Step-by-step explanation:

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