10.6 - Area of Circles, Sectors, and Shaded Regions

What is the formula for the area of a circle?

• $A=2r\pi$

• $A=r^2\pi$

• $A=2r^2\pi$

• $A=r\pi$

Tags

CCSS.7.G.B.4

A circle with a diameter of 16 inches has a radius of:

• 8 inches

• 16 inches

• 32 inches

• 4 inches

Tags

CCSS.7.G.B.4

In the circle, the 16 cm represents the: (answer with one word)

Tags

CCSS.HSG.C.A.2

Find the area of the circle with radius 12 cm. (check all that apply)

• $24\pi\ cm^2$

• $144\pi\ cm^2$

• $37.70\ cm^2$

• $452.39\ cm^2$

• $75.40\ cm^2$

Tags

CCSS.7.G.B.4

What is the diameter of a circle that has an area of 50 in²?

• 7.07 in

• 7.96 in

• 2.25 in

• 3.99 in

Tags

CCSS.7.G.B.4

What is the area of the sector?

• $14.14\ ft^2$

• $42.41\ ft^2$

• $113.10\ ft^2$

• $135\ ft^2$

Tags

CCSS.HSG.C.B.5

Find the area of a sector of a circle with a radius of 9 ft and an intercepted arc of 75⁰

• $75\ ft^2$

• $\frac{15}{4}\pi\ ft^2$

• $\frac{135}{4}\pi\ \ ft^2$

• $\frac{135}{8}\pi\ \ ft^2$

Tags

CCSS.HSG.C.B.5

How would you find the area of the shaded region for this figure? (You don't have to calculate it!!!)

• Find the area of the square and divide by 4

• Find the area of the square and add the area of the circles

• Find the area of the square and subtract 4 times the area of a circle

• Find the area of the circles and subtract the area of the square

What is the area of the figure?

• $32\pi\ cm^2$

• $16+16\pi\ \ cm^2$

• $24\pi\ \ cm^2$

• $16+8\pi\ \ cm^2$

What is the area of the shaded region? (Check all that apply)

• $5\pi\ \ cm^2$

• $3\pi\ \ cm^2$

• $15.71\ cm^2$

• $9.42\ cm^2$

Tags

CCSS.7.G.B.4