The diagram shows a square ABCD with sides of length 20 cm. It also shows a semicircle and an arc of a circle. AB is the diameter of the semi circle. BC is an arc of a circle with centre A. find the area of the shaded region giving ur answer in terms of pi. you must show your working, clearly stating the area of the semi circle.
Answers
Answered by
1
Step-by-step explanation:
Answer:
Area of Shaded Region
Area of Semicircle
Step-by-step explanation:
Area of Shaded Region = Area of Sector - Area of Semicircle
Area of Sector
Radius of the sector =20cm
Area of Semicircle
Since AB is the diameter of the semicircle
Radius of the Semicircle=20/2=10cm
Area of semicircle
Therefore, area of Shaded Region
Area of Square =20 X 20
=400cm2
Answered by
3
Answer:
50π
Step-by-step explanation:
π x 10² ÷ 2 = 50π
π x 20² ÷ 4 = 100π
100π-50π
=50πcm²
Area of shaded region = 50π
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