Advertisements
Advertisements
Question
The area of a rectangle is 102 sqcm. If its length is 17 cm, what is its perimeter?
Advertisements
Solution
Area of rectangle = l × b
102 = 17 × b
b = `102/17 = 6` cm
Perimeter of rectangle = 2(l + b)
= 2(17 + 6)
= 2 × 23
= 46 cm
∴ The Perimeter of the rectangle is 46 cm.
RELATED QUESTIONS
A rectangular hall is 12 m long and 6 m broad. Its flooring is to be made of square tiles of side 30 cm. How many tiles will fit in the entire hall? How many would be required if tiles of side 15 cm were used?
What will be the labour cost of laying the floor of an assembly hall that is 16 m long and 12 m wide if the cost of laying 1 sq m is 80 rupees?
Find the area of the following rectangle
length = 9 m and breadth = 6 m
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?
By splitting the following figure into rectangles, find their areas (The measures are given in centimetres).

Split the following shape into rectangle and find their area. (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 wall of a room is of dimensions 5 m × 4 m. It has a window of dimensions 1.5 m × 1 m and a door of dimensions 2.25 m × 1 m. Find the area of the wall which is to be painted.
The dimensions of a plot are 200 m × 150 m. A builder builds 3 roads which are 3 m wide along the length on either side and one in the middle. On either side of the middle road he builds houses to sell. How much area did he get for building the houses?
In a park of dimensions 20 m × 15 m, there is a L shaped 1 m wide flower bed as shown in the following figure. Find the total cost of manuring for the flower bed at the rate of Rs 45 per m2.

