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Which equation could be used to find the perimeter of an isosceles triangle, with two sides 5 inches long, a base 6 inches long and a height of 4 inches?

A.P = 2 (5 + 6)

B.P = (6 × 4) ÷ 2

C.P = 5 + 6 + 4

D.P = 2 × 5 + 6

Verified Answer :

The perimeter is just the sum of all the sides, so it can be expressed by:

P = 5 + 5 + 6

Since 5 + 5 = 2 x 5 then:

P = 2 x 5 + 6

And the answer is D

The perpendicular height is irrelevant here

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