Advertisements
Advertisements
प्रश्न
4 squares each of side 10 cm have been cut from each corner of a rectangular sheet of paper of size 100 cm × 80 cm. From the remaining piece of paper, an isosceles right triangle is removed whose equal sides are each of 10 cm length. Find the area of the remaining part of the paper.
Advertisements
उत्तर
Area of each square = (10)2 cm2 = 100 cm2 ...[∵ Area of square = (Side)2]
Area of rectangular sheet = 100 × 80 cm2 = 8000 cm2 ...[∵ Area of rectangle = Length × Breadth]
Area of an isosceles right triangle = `1/2 xx 10 xx 10` = 50 cm2 ...[∵ Area of an isosceles right triangle = `1/2` × base × height]
∴ Area of remaining part of paper = 8000 – 4 × 100 – 50 = 7550 cm2
APPEARS IN
संबंधित प्रश्न
The area of a rectangular garden of length 40 m, is 1000 sqm. Find the breadth of the garden and its perimeter. The garden is to be enclosed by 3 rounds of fencing, leaving an entrance of 4 m. Find the cost of fencing the garden at a rate of 250 rupees per metre.
Find the area in square metre of a piece of cloth 1m 25 cm wide and 2 m long.
The length of a rectangular park is 14 m more than its breadth. If the perimeter of the park is 200 m, what is its length? Find the area of the park
Find the area of the following rectangle
length = 8 cm and breadth = 5 cm
What will be the labour cost of laying the floor of an assembly hall which is 14 m long and 10 m breadth if the cost of laying is ₹ 60 per sq.m?
Is this shape half of the big rectangle?
Hmmm...... So its area is ______ square cm.
Here is a rectangle of an area of 20 square cm.
Draw one straight line in this rectangle to divide it into two equal rectangles. What is the area of each of the smaller rectangles?
By splitting the following figure into rectangles, find their areas (The measures are given in centimetres).
How many tiles whose length and breadth are 12 cm and 5 cm respectively will be needed to fit in a rectangular region whose length and breadth are:
100 cm and 144 cm
A rectangular piece of dimensions 3 cm × 2 cm was cut from a rectangular sheet of paper of dimensions 6 cm × 5 cm (see the figure). Area of remaining sheet of paper is ______.
