find the area and perimeter of sector OAB given that angle AOB is 60 degrees and the radius of a circle is 21cm

We have ,

We know that,

[ Perimeter of sector = Arc length + radius + radius ]

Subsitute the required values in the above formula :-

Length of the arc of OAB

Thus, The perimeter of the sector OAB is 64 cm

We have to find the area of sector OAB

We know that,

Subsitute the required values in the above formula :-

Area of sector OAB

Hence, The area and perimeter of the sector OAB is 64 cm and 231cm²

395.84

step-by-step explanation:

2πrh+2πr²

2 (pie)(radius)(height)+2(pie)(radius)^2

step-by-step explanation: