2. Find the center angle of a sector whose area is 462 and the radius is 21 cm
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Step-by-step explanation:
Answer:
120 degree
Step-by-step explanation:
radius - =21 cm
area= 462 cm2
lr/ 2 =462
l* 21 / 2 = 462
l = 462*2 / 21
l = 22*2
length of arc
l = 44 cm
add in the formula
theta/ 360 degree * 2pie r = 44 cm
substitute value of pie as 22/7 and r as 21
theta= 44* 360 *7/ 2*22*21
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