Radius
of a a sector of a circle
is 7 cm .If
the measure of the
arc of the sector is equal to three
right angles
find the
the sector of the circle
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Answer:
Area of sector = 115.5 cm^2
Step-by-step explanation:
Radius of the sector = 7 cm
value of π = 22/7
Measure of the arc = 3 x right angles = 3 x 90 = 270 degrees
thus, angle made at center = θ = 270 degrees
Area (Sector) = (θ / 360) x π x r^2
==> 270/360 x 22/7 x (7)^2
==> 3/4 x 154
==> 3 x 38.5
==> 115.5 cm^2
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