Question

Find the radius of a circle given:
i. its diameter is 10.5 cm
ii.its circumference is 35.2 CV m
iii. its area is 186.34 cm
iv. its semicircle is 39.6 cm
v. its semicircular region is 481.25 sq cm
vi. the area of its quadrant is 9.625 sq cm.​

Answer 1

Answer:HOPE IT HELPS

Answer 2

|)radius=diameter/2

=10.5/2

=5.25

||)radius2π=35.2

=35.2×7/(2×22)

=0.56

|||)πradius^2=186.34

radius^2=59.29

radius=7.7

|V)πradius=39.6

radius=39.6×7÷22

=12.6

V)πr^2/2=481.25

r=√[481.25×2×7÷22]

=175

V|)πr^2÷4=9.625

r=√9.625×4×7÷22

=3.95 approximately


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