Circles Problem Solving

What is the formula for area of a circle given the radius?

• A = πr

• A = 2πr

• A = πd

• A = πr²

Tags

CCSS.7.G.B.4

Shring's dining room table is round and has a radius of 4.5 feet. What is the tabletop's area?

• 63.585 ft²

• 68.345 ft²

• 64.585 ft²

• 61.345 ft²

Tags

CCSS.7.G.B.4

Hannah drew a circle with a radius of 30 cm. Jonas drew a circle with a radius of 20 cm. What is the approximate difference in the areas of their circles?

• 2,826 cm²

• 1,570 cm²

• 1,256 cm²

• 314 cm²

Tags

CCSS.7.G.B.4

A cruise ship has a large, circular window. It has a diameter of 8 meters. What is the window's area?

• 31.25 m²

• 29.55 m²

• 30.36 m²

• 50.27 m²

Tags

CCSS.7.G.B.4

What is the equation of the circle shown in the graph?

Mathematical Equivalence

ON

Tags

CCSS.HSG.GPE.A.1

• chord

• 
• radius

• 
• diameter

• 

Tags

CCSS.HSG.C.A.2

Mr. Smith wants to cover his circular pool. If the pool has a diameter of 13 feet how much fabric would he need to cover the pool? (round to the nearest whole number)

• 41 ft²

• 133 ft²

• 250 ft²

• 531 ft²

Tags

CCSS.7.G.B.4

Marisa purchases a pot for her father's garden. The diameter of the bottom of the pot is 18 cm. What is the area of the pot's bottom? (Round to the nearest whole number.)

• 28 cm²

• 57 cm²

• 254 cm²

• 1017 cm²

Tags

CCSS.7.G.B.4

The diameter of the face-off circle on an ice-hockey rink is 30 feet. Find its area.

• 675.6 ft²

• 29.67 ft²

• 545.8 ft²

• 706.5 ft²

Tags

CCSS.7.G.B.4

Ms. Catall is using a compass to find her way out of the woods. The compass has a radius of 4 centimeters. What is the compass's area?

• 49.2 cm²

• 45.6 cm²

• 50.24 cm²

• 55.9 cm²

Tags

CCSS.7.G.B.4