Step 3 Find the square of the radius. A = 100^

Step 4 Multiply the square of the radius by A = 314 mm2

The area is 314 mm2.

Practice Problem Find the area of a circle with a radius of 16 m.

Volume The measure of space occupied by a solid is the volume (V). To find the volume of a rectangular solid multiply the length times width times height, or V = l X w x h. It is measured in cubic units, such as cubic centimeters (cm3).

Example Find the volume of a rectangular solid with a length of 2.0 m, a width of 4.0 m, and a height of 3.0 m.

Step 1 You know the formula for volume is the length times the width times the height.

Step 2 Multiply the length times the width times the height.

The volume is 24 m3.

Practice Problem Find the volume of a rectangular solid that is 8 m long, 4 m wide, and 4 m high.

To find the volume of other solids, multiply the area of the base times the height.

Example 1 Find the volume of a solid that has a triangular base with a length of 8.0 m and a height of 7.0 m.The height of the entire solid is 15.0 m.

Step 1 You know that the base is a triangle, and the

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