Abcd is a rectangle with length 21 cm and breadth 14 cm.a semicircle is drawn with breadth as diameter. Find the area left in the rectangle and also find it's perimeter.
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"26.25" I think this can answer.
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area of rectangle=21*14=294
semi circle at two side of breath
and area=πr^2/2
area of semi circle=1/2*22/7*7*7=77
area of Left in rectangle= area of rectangle-area of semi circle
area left=294-77=217
length of rectangle=21
2side so 42
length of curve= theta/360°*2πr
theta=180° because it's line of breath
length of curve= 1/2*2*22/7*7=22
breath of on side 14
perimeter=42+22+14=78
semi circle at two side of breath
and area=πr^2/2
area of semi circle=1/2*22/7*7*7=77
area of Left in rectangle= area of rectangle-area of semi circle
area left=294-77=217
length of rectangle=21
2side so 42
length of curve= theta/360°*2πr
theta=180° because it's line of breath
length of curve= 1/2*2*22/7*7=22
breath of on side 14
perimeter=42+22+14=78
Bhains:
There is only one semicircle.
Answers fast..
Why have you taken 44 in last calculation.
sorry
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