Correct answer gets brainliest :) Please help with my homework:)

A) 30 cm

B) 20 cm

Explanation:

For the perimeter of rectangle B, I just imagined there was a cut horizontally through the middle. The length would be 5, since its half, and the width would be the same (10) because folding it into a rectangle only changes its length.

I added it up : 5+5+10+10= 30 cm

Rectangle B is 30 cm

For the perimeter of square C, you folded it again to make the width decrease by 5cm , so all the sides were 5cm.

5+5+5+5=20 cm

Square C is 20 cm

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