Find the area of sector of a circle with radius 4cm and of angle 30°.find the area of corresponding major sector
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area of the sector =
so,
=30/360 × 22/7 × 4^2
=1/12 × 22/7 × 16
=4/3 × 3.14
= 12.56/3
= 4.1867
so,
=30/360 × 22/7 × 4^2
=1/12 × 22/7 × 16
=4/3 × 3.14
= 12.56/3
= 4.1867
ram071987:
for the major sector use sector angle as 2π - alpha
the formula will be (2π - alpha) πr^2
ok but is my method wrong??
the first one is 360 for the pi and second is 22/7
yeah
no ur methid is the same as i told
yeah yeah i understood
i confused because u r using π two times
π is used for angle too in radians
ok but i think we cant use π two times in the same equation for different meanings, if we want we can just take π' for the second meaning
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