Geometry Circle Review Central Arcs Area Circumference

A sprinkler that sprays water in a circular area can be adjusted to spray up to 30 feet. To the nearest tenth, what is the maximum area of lawn that can be watered by the sprinkler?

• 188.4 ft²

• 706.5 ft²

• 183.6 ft²

• 2,826 ft²

Olivia ordered a 12'' cookie cake for her birthday. She requested the icing to have a sun covering the center and be 8'' in diameter. How much of Olivia's cookie cake is covered by icing?

• 12.6

• 50.3

• 201.1

• 452.4

Wyatt notices that a local pizza parlor is running a special on their 16'' supreme thin crust pizza with no crust around the outer edge. If Wyatt orders 3 pizzas, what would he total area of the three pizzas be?

• 201.1 square inches

• 2,412.7 square inches

• 75.4 square inches

• 603.2 square inches

If a Circle has a radius of 3 cm and a diameter of 6cm , what is the circumference of the circle? 

• 9.42 cm

• 18.84 cm

If a circle has a circumference of 26.69 yards, what is it's diameter?

• 8.5 yards

• 83.8 yards

• 4.2 yards

• 17.6 yards

If a circle has a diameter of 45 feet, what is its radius?

• 90 feet

• 22.5 feet

• 45 feet

• 180 feet

A circle has a radius of 150 mm. What is it's circumference? 

• 471 mm

• 942 mm

• 47.7 mm

What is the correct formula for the Area of a Circle? 

• A= π x d

• A = π x d²

• A= π x r²

What is the area of a circle that has a radius of 100 miles?

• 7,850 miles 

• 10,000 miles

• 31,400 miles

Find the area for a circle with a diameter of 8 feet. 

• 200.96 feet 

• 25.12 feet 

• 12.56 feet 

• 50.24 feet