Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 8 Answered

A wire is in the shape of a square of side 22 cm. If the wire is re-bent into a circle, find its radius. Also find the area of circle.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
answered-by-expert Expert Answer

Given that the side of the square = 22 cm

Length of the wire = perimeter of the square

= 4 x side = 4 x 22 = 88 cm

Since the same wire is used to make the circle, both will have the same perimeter.

So, perimeter of the circle = 88

Thus, radius of circle = 14 cm

Now, area of circle =

Answered by | 04 Jun, 2014, 03:23: PM

Application Videos

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
CBSE 8 - Maths
Find the area of the polygon
question image
Asked by sj596827 | 29 Jul, 2020, 05:58: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 8 - Maths
Get the expression for the area of trapezium by using the expression for the area of triangle
Asked by krishnasatya333 | 25 Apr, 2020, 08:37: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 8 - Maths
The area of a circular cardboard sheet is 154 cm2. Find the radius of sheet.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 8 - Maths
Find the area and perimeter of a circular park whose radius is 20 cm.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 8 - Maths
In the figure given below, a circle is inscribed inside another circle. The radius of the outer circle is 12 cm and that of the inner circle is 7 cm. Find the area of the shaded portion between the circles.  
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 8 - Maths
If the area of a rectangle is 243 sq. m and the length is 27 m, what is the breadth of the rectangle?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 8 - Maths
Find the area of the parallelogram.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 8 - Maths
Ram and Hari are using 4 ft by 8 ft plywood sheets to build a rectangular stage for an outdoor concert. If the area of the stage is 200 square feet, what is the least number of sheets they need?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 8 - Maths
A small square is located inside a bigger square as shown in the figure below. The length of one side of the small square is 3 cm and the length of one side of the big square is 7 cm. What is the area of the shaded region?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 8 - Maths
A wire is in the shape of a square of side 22 cm. If the wire is re-bent into a circle, find its radius. Also find the area of circle.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Get Latest Study Material for Academic year 24-25 Click here
×