4T_Revision for WA1

Find the area of the major sector .

• 13.4

• 47.0

• 30.5

• 107

What is the arc length formula?

• $\frac{\theta}{360}\times\pi r$

• $\frac{\theta}{360}\times\pi r^2$

• $\frac{\theta}{360}\times2\pi r$

• $\frac{\theta}{360}\times2\pi r^2$

Find the perimeter of the minor sector OAB?

• 15cm

• 14.4cm

• 44.4 cm

• 44.398 cm

Write down the answer for each of the above?

• 32.6, 66.6 , 24.7

• 30 cm, 60 , 25

• 84.5, 28.9, 30.2

• 32.6, 66.6. 30.2

Given that the circumference of the circle is 50 cm, find the minor arc length of AB.

• 7.96

• 15.3

• 96.0

• 50

The area of the minor sector is 72 cm2. Find the radius.

• 8.31

• 8.00

• 8.29

• 9.00

The area of sector shown above is  

 $200\frac{1}{3}cm^2$  . FInd the perimeter of the minor sector.

• 459.13

• 21.4

• 18.7

• 61.5

Given that OA = 5 cm and OB = 8 cm, find the perimeter of the shaded region.

• 12.2

• 19.5

• 37.7

• 34.7

Given that OA = 5 cm and AB = 2 cm, find the area of the shaded region.

• 24.0

• 59.9

• 40.0

• 35.9

Find the area of the shaded region.

• 640

• 78.5

• 570

• 561