A paper is in the form of a rectangle ABCD in which AB = 20 cm and BC = 14 cm. A semicircular portion with BC as diameter is cut off. Find the area of the remaining part.
The figure is given below:
Diameter of semi-circle = BC = 14cm
Radius of semi–circle
Area of semi-circle
= 77 cm2
Area of sheet = 20 × 14 = 280 cm2
Thus, Area of remaining sheet = 280-77
= 203 cm2
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On a square handkerchief, nine circular designs each of radius 7 cm are made. Find the area of the remaining portion of the handkerchief.
Tamilnadu - Math Term-1