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julsineya [31]
3 years ago
7

Refer to the rectangle at the right. Suppose the side lengths are doubled. a. Find the percent of change in the perimeter b. Fin

d the percent of change in the area
Mathematics
1 answer:
pochemuha3 years ago
8 0

Answer:

400% area and 200% perimeter

Step-by-step explanation:

Given is a picture of a rectangle.  (i.e. opposite sides are equal and all angles equal to 90 degrees)

We know for any rectangle with length l and width, w

Area of rectangle = lw and

Perimeter of rectangle = 2(l+w)

Suppose the side lengths are doubled

Now length = 2l and width = 2w

New ARea = 2l*2w\\=4lw

i.e. 400% times is the new area.

New perimeter = 2(2l+2w) =4(l+w)

New perimeter is 200% times the old perimeter.

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