Advertisements
Advertisements
Question
Find the length and perimeter of a rectangle, whose area = 120 cm2 and breadth = 8 cm
Advertisements
Solution
area of rectangle = 120 cm2
breadth, b = 8 cm
Area = l x b
l x 8 = 120
l = `120/8` = 15 cm
Perimeter = 2 (l+b) = 2(15+8) = 2 x 23 = 46 cm
Length = 15 cm; Perimeter = 46 cm
APPEARS IN
RELATED QUESTIONS
The perimeter of a rectangle is 46 m and its length is 15 m. Find its :
(i) breadth
(ii) area
(iii) diagonal.
The perimeter of a rectangular field is 500 m and its length = 150 m. Find:
(i) its breadth,
(ii) its area.
(iii) cost of ploughing the field at the rate of ₹1.20 per square meter.
Each side of a square is 9 m long. Find its perimeter.
The length of a rectangular plot of land is 50 m and its width is 30 m. A triple fence has to be put along its edges. If the wire costs 60 rupees per metre, what will be the total cost of the wire needed for the fence?
Find the perimeter of the following figure
Length of a rectangle is three times its breadth. Perimeter of the rectangle is 40 cm. Find its length and width.
Find the cost of fencing a rectangular park of length 175 m and breadth of 125 m at the rate of ₹ 12 per metre.
What is the perimeter of the following figures? What do you infer from the answers?
 (a) |
 (c) |
 (b) |
 (d) |
If a wire in the shape of a square is rebent into a rectangle, then the ______ of both shapes remain same, but ______ may varry.
What is the correct formula for the perimeter of a rectangle with length (l) and breadth (b)?
