plzz solve this ques
Areas related to Circles chapter
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area of semi circle DB
radius =5
area =πr^2/2=25π/2
area of semi circle AB
same 25π/2
add both (25π/2)2=25π=78.5
area of two unshaded region is 100-78.5=21.5
simarly find area of semicircle AD and BC
there are four unshaped areas 2*21.5=53
shaded region =area of square-area of unshaped region
=100-53=47
radius =5
area =πr^2/2=25π/2
area of semi circle AB
same 25π/2
add both (25π/2)2=25π=78.5
area of two unshaded region is 100-78.5=21.5
simarly find area of semicircle AD and BC
there are four unshaped areas 2*21.5=53
shaded region =area of square-area of unshaped region
=100-53=47
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Answer:
57 cm²
Step-by-step explanation:
From figure:
Area of II & IV:
= Area of ABCD - Area of two circles each of radius 5 cm(Area of I & III)
= [10 * 10 - 2 * 1/2 * π * 5²]
= [100 - 78.5]
= 21.5 cm²
Similarly, Area of I & III = 21.5 cm².
Area of shaded region:
= Area of ABCD - Area of (I + II + III + IV)
= (100 - 2 * 21.5)
= 100 - 43
= 57 cm².
Hope it helps!
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