Step 1: \ \

In basketball, the key is a rectangle shape that measure length and width .

Draw the diagram for basket ball key is completed buba semicircle toward midcourt:

Find the out side perimeter of the key. \ \

The width of the rectangle is the diameter of the semi circle. \ \

The perimeter of the semi circle is , where is the diameter of the semi circle. \ \

Substitute in .

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The perimeter of the rectangle shape is , where is the length and is the width. \ \

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The perimeter of rectangle shape is .

Substitute and .

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The out side perimeter of the basket ball key is completed buba semicircle toward midcourt is .

Substitute and .

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(2)

The outside perimeter of the basket ball key is .

The perimeter of the key is .

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Hence, the perimeter of the key is .

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