Question

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 1

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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