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Find the missing side and then find the perimeter

Find the missing side and then find the perimeter-example-1
User Latrisha
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1 Answer

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To find the missing side length of the rectangle, we can use the formula for the area of a rectangle:

A=l×w

where A is the area, l is the length, and w is the width.

We are given the area and the width, so we can plug them into the formula and solve for the length:

11.3=l×5.4

l=5.411.3​

l≈2.1

So, the missing side length is approximately 2.1 cm.

To find the perimeter of the rectangle, we can use the formula:

P=2(l+w)

where P is the perimeter, l is the length, and w is the width.

We have both the length and the width, so we can plug them into the formula and simplify:

P=2(2.1+5.4)

P=2(7.5)

P=15

So, the perimeter of the rectangle is 15 cm.

I hope this helps.

User Nan Zhou
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