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ML Aggarwal Solutions Class 9 Mathematics Solutions for Mensuration Exercise 16.3 in Chapter 16 - Mensuration
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(a) In the figure (i) given below, AOBC is a quadrant of a circle of radius 10m. Calculate the area of the
shaded portion. Take π = 3.14 and give your answer correct to two significant figures.
(b) In the figure (ii) given below, OAB is a quadrant of a circle. The radius OA = 3.5 cm and OD = 2 cm.
Calculate the area of the shaded portion.
Answer:
When it comes to circles, a quarter of a circle is referred to as a quadrant, which is a 90-degree sector. When four of these quadrants are brought together, the only structure that remains is a circle.
(a) In the figure
Shaded portion = Quadrant - △AOB
The radius of the quadrant = 10 m
Here
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