Area and Perimeter of Sectors

Does this picture show the diameter or radius of a circle?

• Diameter
• Radius

Tags

CCSS.7.G.B.4

Does this picture show the diameter or radius of a circle?

• Diameter
• Radius

Tags

CCSS.7.G.B.4

Which of these is the correct formula for the area of a circle?

• A = πd

• A = πr

• A = 2πr

• A = πr²

What is the exact area of this circle?

• 4π m²

• 8π m²

• 16π m²

• π m²

What is the radius of a circle with an area of 49π?

• 49

• 10

• 7

• 14

Tags

CCSS.7.G.B.4

What is the radius of a circle with an area of 64π?

• 64

• 12

• 8

• 32

is the formula for?

 $\pi r^2\ \times\left(\frac{\theta\degree}{360\degree}\right)$  

• arc length

• area of a sector

• area of a segment

• arc measure

What fraction of the circle is shaded, in its simplest form?

• $\frac{90}{360}$

• $\frac{100}{360}$

• 90

• $\frac{1}{4}$

What is the area of the shaded region? Round to the nearest hundredth.

• 1.26

• 452.39

• 9.42

• 113.10

What fraction of the circle is shaded, in its simplest form?

• $\frac{100}{360}$

• $\frac{10}{36}$
  

• $\frac{5}{18}$
  

• $\frac{360}{100}$