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Part b is area of large circle + area of 2 semicircles - area of triangles. So..

8÷2=4

4×4×3.14=50.24 (area of large circle)

Area of triangle (as shown above) =32cm2

4÷2=2

2×2×3.14×2=25.12 (area of 2 semicircles)

25.12+50.24=75.36

75.36-32=43.36

Ans: 43.36 cm2

8÷2=4

4×4×3.14=50.24 (area of large circle)

Area of triangle (as shown above) =32cm2

4÷2=2

2×2×3.14×2=25.12 (area of 2 semicircles)

25.12+50.24=75.36

75.36-32=43.36

Ans: 43.36 cm2

Date Posted:
1 year ago