Advertisements
Advertisements
प्रश्न
Calculate the area of the shotput circle whose radius is 2.135 m.
Advertisements
उत्तर
Radius of the shotput circle r = `"d"/2`
= `2.135/2` m
Area of the circle = πr2
= `22/7 xx 2.135/2 xx 2.135/2`
= `25.07/7`
= 3.581 m2
∴ Area of the shotput circle = 3.581 m2
APPEARS IN
संबंधित प्रश्न
A circular flower garden has an area of 314 m2. A sprinkler at the centre of the garden can cover an area that has a radius of 12 m. Will the sprinkler water the entire garden? (Take π = 3.14)
The area of rectangle is `192cm^2` and its perimeter is 56 cm. Find the dimensions of the rectangle.
The length of the minute hand of a clock is 14 cm. Find the area swept by the minute hand in 5 minutes.
A calf is tied with a rope of length 6 m at the corner of a square grassy lawn of side 20 m . If the length of the rope is increased by 5.5 m , find the increase in area of the grassy lawn in which the calf can graze .
If the circumference and the area of a circle are numerically equal, then diameter of the circle is
A wire when bent in the form of an equilateral triangle encloses an area of `121sqrt(3)" cm"^2`. If the same wire is bent into the form of a circle, what will be the area of the circle?
Two circles touch each other externally. The sum of their areas is 58π cm2 and the distance between their centers is 10 cm. Find the radii of the two circles.
The following figure shows a square cardboard ABCD of side 28 cm. Four identical circles of the largest possible sizes are cut from this card as shown below.
Find the area of the remaining card-board.
The diameters of three circles are in the ratio 3: 5: 6. If the sum of the circumferences of these circles is 308 cm; find the difference between the areas of the largest and the smallest of these circles.
Perimeter of a sector of a circle whose central angle is 90° and radius 7 cm is ______.
