A rectangle has a length of 12 millimeters and a width of 17 millimeters.

What is the effect on the perimeter when the dimensions are multiplied by 12?

a. The perimeter is increased by a factor of 12.

b. The perimeter is increased by a factor of 48.

c. The perimeter is increased by a factor of 144.

d. The perimeter is increased by a factor of 576.

Question

Mathematics

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3 March, 01:10

A rectangle has a length of 12 millimeters and a width of 17 millimeters.

What is the effect on the perimeter when the dimensions are multiplied by 12?

a. The perimeter is increased by a factor of 12.

b. The perimeter is increased by a factor of 48.

c. The perimeter is increased by a factor of 144.

d. The perimeter is increased by a factor of 576.

+3

Answers (1)

Know the Answer?

Kara Leblanc · Answer 1

ok so original perimeter = 12 + 12 + 17 + 17 = 58 mm

if dimensions are multiplied by 12:

12*12 = 144 and 17*12 = 204

new perimeter = 144 + 144 + 204 + 204 = 696 mm

696 / 58 = 12

so the perimeter increased by a factor of 12, answer is A