Advertisements
Advertisements
Question
In the following figure, find the area of the shaded portions
Advertisements
Solution
ar (QTU) = ar (PQRS) − ar (TSU) − ar (RUQ) − ar (PQT)
= (20 × 20) − `1/2` (10 × 10) − `1/2` (20 × 10) − `1/2` (20 × 10)
= 400 − 50 − 100 − 100 = 150 cm2
RELATED QUESTIONS
A 3 m wide path runs outside and around a rectangular park of length 125 m and breadth 65 m. Find the area of the path.
A picture is painted on a cardboard 8 cm long and 5 cm wide such that there is a margin of 1.5 cm along each of its sides. Find the total area of the margin.
A verandah of width 2.25 m is constructed all along outside a room which is 5.5 m long and 4 m wide. Find:
1) the area of the verandah
2) the cost of cementing the floor of the verandah at the rate of Rs 200 per m2.
A path 1 m wide is built along the border and inside a square garden of side 30 m. Find:
1) the area of the path
2) the cost of planting grass in the remaining portion of the garden at the rate of Rs 40 per m2
The adjoining figure represents a rectangular lawn with a circular flower bed in the
middle. Find:
1) the area of the whole land
2) the area of the flower bed
3) the area of the lawn excluding the area of the flower bed
4) the circumference of the flower bed.
A path 5 m wide runs along inside a square park of side 100 m. Find the area of the path. Also, find the cost of cementing it at the rate of Rs. 250 per 10 m2.
Find the area enclosed by the following figure:
Find the area enclosed by the following figure:
Find the area enclosed by the following figure:
The perimeter of a square plot is 200 m. What is the area of the plot?
