Question

A rectangle has a perimeter of 68 ft. The length and width are scaled by a factor of 3.5.

What is the perimeter of the resulting rectangle?



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ft

Answer 1

Explanation:

at similsrity the perimer ratio and the side ratio are the same so equale to K.

P1/P2 = k .... but u don't explain which one is P1 of P2

so i can work u by both and u will check

and take the correct 1.

1. If P1=68ft

• 68ft/P2 = 3.5
• P2 ×3.5 = 68ft
• P2= 68ft/3.5
• P2 = 19.42 ft

2. If P2=68ft

• P1/68ft = 3.5
• P1 = 3.5 × 68ft
• P1 = 238ft

so if ur give is p1 take the 1st one and if ur given is p2 take the 2nd one.

Answer 2

2l + 2w = 68, so l + w = 34

3.5(l + w) = 3.5(34) = 119, so the perimeter of the new rectangle is 2(119) = 238.