9.1 Area Formulas

What is the formula for the area of a triangle?

• A=bh

• A=lw

• A=s²

How do you find the radius of a circle?

• Divide the diameter by 2

• Multiply the diameter by 2

• Divide by pi

What is the formula for the area of a trapezoid?

• A=lw

• A=bh

When measuring area, what label do you use?

• units
• units²
• units³

Find the area of the circle

• 43.96
• 153.86
• 87.82
• 307.72

Find the area of the trapezoid.

• 18 m²
• 165 m²
• 84 m²
• 22.5 m²

Find the area of the triangle.

• 10 cm²

• 24 cm²

• 12 cm²