The diagram shows a rectangular cardboard from which a semi-circle is cut off. Calculate the area of the remaining part
A.
44cm2
B.
99cm2
C.
154cm2
D.
165cm2
Correct answer is B
Area of remaining = Area of rectangle = Area of semi-circle
22 x 8 - \(\frac{1}{2}\)xar2
ehere r - \(\frac{14}{2}\)cm = 7cm
Area of remaining = 176 - \(\frac{1}{2}\) x \(\frac{22}{4}\) x 7 x 7
= 176 - 77
= 99cm2