Advertisements
Advertisements
प्रश्न
Shazli took a wire of length 44 cm and bent it into the shape of a circle. Find the radius of that circle. Also find its area. If the same wire is bent into the shape of a square, what will be the length of each of its sides? Which figure encloses more area, the circle or the square? (Take `pi = 22/7`)
Advertisements
उत्तर
Circumference = `2pir` = 44 cm
`2 xx 22/7xx r = 44`
r = 7 cm
Area = `pir^2`
= `22/7xx 7 xx 7`
= 154 cm2
If the wire is bent into a square, then the length of each side would be = `44/4`
= 11 cm
area of square = (11)2
= 121 cm2
As 154 > 121
Therefore, circle encloses more area.
APPEARS IN
संबंधित प्रश्न
In the given figure,
\[\square\] PQRS is a rectangle. If PQ = 14 cm, QR = 21 cm, find the areas of the parts x, y, and z.
Find the radius of a circle whose perimeter and area are numerically equal.
Find the area of a quadrant of a circle whose circumference is 88 cm.
Three equal circles, each of radius 6 cm, touch one another as shown in the figure. Find the area of enclosed between them.
If the perimeter of a square is equal to the circumference of a circle then the ratio of their areas is
The area between the circumferences of two concentric circles is 2464 cm2. If the inner circle has circumference of 132 cm, calculate the radius of outer circle.
The circumference of a circle is equal to the perimeter of a square. The area of the square is 484 sq. m. Find the area of the circle.
A conical tent with a capacity of 600 m3 stands on a circular base of area 160 m2 Find in m2 the area of the canvas.
The diameter of a circle is 28 cm.
Find its :
(i) Circumference
(ii) Area.
The circumference of a given circular park is 55 m. It is surrounded by a path of uniform width of 3.5 m. Find the area of the path.
