Advertisements
Advertisements
प्रश्न
If the length and breadth of a rectangle are doubled, how many times the perimeter of the old rectangle will that of the new rectangle be?
Advertisements
उत्तर
 |
 |
| Old rectangle | New rectangle |
Let l be the length of the old rectangle and b be the breadth.
∴ the old rectangle's perimeter = 2(l + b)
new rectangle length = 2l and breadth = 2b
∴ The new rectangle's perimeter = 2(2l + 2b)
= 2 × 2 (l + b)
= 2 × Perimeter of old rectangle
∴ The new rectangle's perimeter will be twice that of the old rectangle.
संबंधित प्रश्न
If the side of a square is 12 cm, find its area.
Find the area of the following rectangle
length = 9 m and breadth = 6 m
The side of a square is 6 cm. The length of a rectangle is 10 cm and its breadth is 4 cm. Find the perimeter and area of both the square and rectangle
Anmol has a chart paper of measure 90 cm × 40 cm, whereas Abhishek has one which measures 50 cm × 70 cm. Which will cover more area on the table and by how much?
Divide the park shown in the following figure of question 40 into two rectangles. Find the total area of this park. If one packet of fertilizer is used for 300 sq m, how many packets of fertilizer are required for the whole park?
What is the cost of tiling a rectangular plot of land 500 m long and 200 m wide at the rate of ₹ 8 per hundred sq m.?
Split the following shape into rectangle and find their area. (The measures are given in centimetres).
A 10 m long and 4 m wide rectangular lawn is in front of a house. Along its three sides a 50 cm wide flower bed is there as shown in the following figure. Find the area of the remaining portion.
Ramesh grew wheat in a rectangular field that measured 32 metres long and 26 metres wide. This year he increased the area for wheat by increasing the length but not the width. He increased the area of the wheat field by 650 square metres. What is the length of the expanded wheat field?
The plan and measurement for a house are given in the following figure. The house is surrounded by a path 1 m wide.
Find the following:
- Cost of paving the path with bricks at rate of ₹ 120 per m2.
- Cost of wooden flooring inside the house except the bathroom at the cost of ₹ 1200 per m2.
- Area of Living Room.
