1.2.1 Using Formulas in Geometry − Practice

1. Find the area and perimeter.

2. Find the area and perimeter.

3. Find the area and perimeter.

4. Find the circumference and area of a circle with radius 4 cm. Express your answer in terms of π .

( Hint : The height of a non-right triangle is the length of the segment of a line that is perpendicular to the base and that contains the opposite vertex.)

5. Find the circumference and area of a circle with diameter 12 ft. Express your answer in terms of π.

6. The area of a rectangle is 108.35 in 2 and the length is 7.8 in. Find the width.

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