Advertisements
Advertisements
Question
A thin wire 20 centimeters long is formed into a rectangle. If the width of this rectangle is 4 centimeters, what is its length?
Advertisements
Solution
Given perimeter of rectangle = 20 cm
Width of a rectangle = 4 cm
We know, perimeter of rectangle = 2 (length + breadth)
20 = 2 length + 2 breadth
2 length = 20 - 2 breadth
2 length = 20 - 2 x 4
2 length = 20 - 8
length = 12/2
= 6 cm
APPEARS IN
RELATED QUESTIONS
The diagonal of a square is `12sqrt2` cm. Find its perimeter.
Find the perimeter of a rectangle whose length = 22.5 m and breadth = 16 dm.
Find the perimeter of a rectangle with length = 24 cm and diagonal = 25 cm
The perimeters of two squares are in the ratio 8 : 15, find the ratio between the lengths of their sides.
The interior of a figure is called region of the figure. Is this statement true?
Find the perimeter of a square whose each side is 1.6 m.
Find the side of the square whose perimeter is 5 m.
The table given below contains some measures of the rectangle. Find the unknown values.
| Length | Breadth | Perimeter | Area |
| ? | 4 feet | ? | 20 sq.feet |
Is the perimeter of the yellow shape more than the perimeter of the blue shape? Why?
Match the shapes (each sides measures 2 cm) in column I with the corresponding perimeters in column II:
| Column I | Column II |
(A)  |
(i) 16 cm |
(B)  |
(ii) 20 cm |
(C)  |
(iii) 24 cm |
(D)  |
(iv) 28 cm |
| (v) 32 cm |
A rectangle and a square have the same perimeter (Figure).
- The area of the rectangle is ______.
- The area of the square is ______.
Perimeter of a regular octagon of side 6 cm is 36 cm.
To find the cost of a frame of a picture, we need to find the perimeter of the picture.
Perimeter of an isosceles triangle is 50 cm. If one of the two equal sides is 18 cm, find the third side.
What is the length of outer boundary of the park shown in the following figure? What will be the total cost of fencing it at the rate of Rs 20 per metre? There is a rectangular flower bed in the center of the park. Find the cost of manuring the flower bed at the rate of Rs 50 per square metre.
Find the perimeter of the following figure:
A table-top measures 2 m 25 cm by 1 m 50 cm. What is the perimeter of the table-top?
Find the perimeter of the following shape:
An isosceles triangle with equal sides of 8 cm each and the third side of 6 cm.
What is the perimeter of a closed figure?
If you start at point S on a closed figure and move along all line segments to return to S, what distance have you covered?
