Question

Find the perimeter of a triangle where one side is 2 inches, one side is 6 inches and another side is 10 inches.

(a) 2in.
(b) 9in.
(c) 36in.
(d) 18in.​

Answer 1

(d) 18 in.

Explanation:

When we're given the three sides of a triangle, one formula we can use for perimeter of a triangle is:

P = s1 + s2 + s3, where

• P is the perimeter,

• and s1, s2, and s3 are the three sides:

P = 2 + 6 + 10

P = 8 + 10

P = 18

Thus, the perimeter of the triangle is 18 in.