The diagram shows a rectangular cardboard from which a semi-circle is cut off. Calculate the area of the remaining part
- 44cm2
-
99cm2
- 154cm2
- 165cm2
The correct answer is: B
Explanation
Area of remaining = Area of the rectangle - Area of the semi-circle
22 x 8 - \(\frac{1}{2}\)x πr\(^2\)
Here r = \(\frac{14}{2}\)cm = 7cm
Area of remaining = 176 - \(\frac{1}{2}\) x \(\frac{22}{7}\) x 7 x 7
= 176 - 77
= 99cm\(^2\)