Question

Area of sector=@/360×pie r^2 and length of sector=1/2×l×r. So, how can we use the formula of length of sector instead of using area of sector.

Answer 1

Step-by-step explanation:

when in the question there will be a measure of central angle then u have to use area of sector formula

but when in the question there will be length of arc then u have to use the length of sector formula..

hope u understood....