Q3 of 64 Page 81

If the angle subtended by the arc of a sector at the center is 90°, then the area of the sector in square units is

Given:

radius = r


central angle = 90°


Area of sector =




Option (C) is correct.

More from this chapter

All 64 →
1

The length of the arc of a sector having central angle 90° and radius 7 cm is

 2

If the radius and arc length of a sector are 17 cm and 27 cm respectively, then the perimeter is

 4

Area of a sector having radius 12 cm and arc length 21 cm is

 5

The area of a sector with radius 4 cm and central angle 60° is