find the areas of the four Blades of same size of radius 20cm and Central angle 45 degree of a circular fan.
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Answer:
hi
your answer is here !
Step-by-step explanation:
r= 28cm
central angle (theta)= 45
area of sector=theta/360*pi*r*r
=45/360*22/7*28*28
= 308cm²
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