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The perimeter of a rectangular painting is 310 centimeters. If the width of the painting is 56 centim

User Chucky
by
7.1k points

2 Answers

2 votes

Answer:

99 centimeters

Explanation:

Use formula for perimeter of a rectangle.

P = 2l + 2w

310 = 2l + 2(56)

Solve for l.

310 - 2(56) = 2l

310 - 112 = 2l

198 = 2l

99 = l

User Alanmoo
by
6.9k points
4 votes

Answer:

The length is 99 cm

Explanation:

The perimeter of a rectangle is

P = 2 (l+w)

310 = 2( l+56)

Divide each side by 2

310/2 = 2/2( l+56)

155 = l+56

Subtract 56

155-56 = l+56-56

99 = l

User Jiayang
by
7.7k points