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
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