Circumference, Area, and Volume

A circular swimming pool is 21 feet in diameter.
How many feet around is the pool?

• 10.5 ft
• 42 ft
• 65.94 ft
• 131.95 ft

What is the area of the quarter circle?

• 452.16
• 226.08
• 113.04
• 904.32

What formula is this used for:
πd

• Area
• Circumference 
• Surface Area
• Volume 

Other than the formula C=πd what is another formula for circumference of a circle?

• C=2π
• C=2πr
• C=πr²
• C=πd²

Meg swam from one side of her circular pool to the other side going through the center.  If Meg swam 8 feet, what is the approximate circumference of Meg's pool?

• 16 feet
• 25.12 feet
• 251.2 feet
• 4 feet

Calculate the area. Use 3.14 for pi. Round to the nearest tenth if needed.

• 61.2325 cm ²

• 61.2 cm ²

• 195.9 cm ²

• 90.1 cm ²

Calculate the area.

• 336 cm ²

• 172 cm ²

• 459 cm ²

• 522 cm ²

Calculate the area. Use 3.14 for pi. Round to the nearest tenth if needed.

• 1582.8 cm ²

• 1476.4 cm ²

• 586.2 cm ²

• 602.5 cm ²

What is the surface area of this figure?

• 700 in²

• 800 in ²

• 600 in ²

• 650 in ²

What is the total surface area of the triangular prism shown? 

• 468 in²
• 540 in²
• 576 in²
• 700 in²