1.2.1 Using Formulas in Geometry − Worksheet

Example 1: Find the perimeter and area of each figure. 1. 2.

3.

4 mm

13 m

y – 3

5 m

4 m

11 mm

x m

3 m

Example 2: 4. A puzzle contains a triangular piece with a base of 3 in. and a height of 4 in. A manufacturer wants to make 80 puzzles. Find the amount of wood used if each puzzle contains 20 triangular pieces.

Example 3: Find the circumference and area of each circle. Use the π key on your calculator. Round to the nearest tenth. 5. 6. 7.

2.1 m

16 cm

7 in.

49

Made with FlippingBook - Online magazine maker