Question for Only:- ❏ Moderators ❏ Brainly Stars ❏ Best users ✰ QUESTION ✰from a rectangular cardboard ABCD 2 circles and 1 semicircle of a largest side are cut. calculate the ratio between the area of the remaining cardboard and area of cardboard.
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Answer:
The largest area of the circle is possible when diameter 42cm
Therefore,
Radius= 42/2
=21cm
Therefore,
Area of circle =π(21) ² =1386cm ²
Area of rectangle =(42×55)cm
=2310cm ²
Therefore,
Area of remaining cardboard =42×55−π(21) ²
=2310cm² =924cm²
Therefore,
Ratio of area of circle and area of remaining cardboard =1386:924 = 3:2
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