Question

Question O Video In circle N, m/ONP = 144° and the area of the shaded sector = 407. Find the length of NO.​

Answer 1

10

Explanation:

area of sector = n/360° × πr²,

where n is the measure in degrees of the central angle of the sector

40π = 144°/360° × π × r²

100 = r²

r = 10