Question

The width of a rectangle measures (s+5t) centimeters, and its length measures (s+2t)centimeters. Which expression represents the perimeter, in centimeters, of the rectangle?

Answer 1

4s+14t

Explanation:

2*[(s+5t)+(s+2t)]

=2*(2s+7t)

=4s+14t

Answer 2

Explanation:

Remark

The Perimeter of a rectangle is found using

P = 2L + 2w

Givens

L = s+2t

w = s + 5t

Solution

P = 2(s + 2t) + 2(s + t5) Remove the brackets

P = 2s + 4t + 2s + 10t Combine

P = 4s + 14t

Answer P = 4s + 14t This cannot be reduced any further.