Advertisements
Advertisements
Question
In the figure given below, find the area of shaded region: (All measurements are in cm)
Advertisements
Solution
Outer length = 30 cm
and Outer breadth = 20 cm
∴ Outer area = l × b
= 30 × 20 = 600 cm2
Inner length = 12 cm and inner breadth = 12 cm
Inner area = l × b = 12 × 12 = 144 cm2
Area of shaded portion = Area of outer figure − Area of inner figure
= 600 − 144 = 456 cm2
APPEARS IN
RELATED QUESTIONS
Find the area of the square whose perimeter is 56 cm.
A square lawn is surrounded by a path 2.5 m wide. If the area of the path is 165 m2 find the area of the lawn.
In the figure given below, find the area of shaded region: (All measurements are in cm)
If the area of a rhombus is 112 cm2 and one of its diagonals is 14 cm, find its other diagonal.
The area of a rhombus is 84 cm2 and its perimeter is 56 cm. Find its height.
Find the height of a triangle whose base is 18 cm and the area is 270 cm2.
Find the area of a right-angled triangle whose hypotenuse is 13 cm long and one of its legs is 12 cm long.
Find the area of an isosceles triangle whose base is 16 cm and the length of each of the equal sides is 10 cm.
The ratio between the areas of two circles is 16 : 9. Find the ratio between their :
(i) radius
(ii) diameters
(iii) circumference
A metal wire, when bent in the form of a square of largest area, encloses an area of 484 cm2. Find the length of the wire. If the same wire is bent to the largest circle, find:
(i) radius of the circle formed.
(ii) area of the circle.
