Advertisements
Advertisements
प्रश्न
Find the circumference of the inner and the outer circles, shown in the adjoining figure? (Take π = 3.14)
उत्तर
Radius of outer circle = 19 m
Circumference = 2πr
= 2 × 3.14 × 19
= 119.32 m
Radius of inner circle = 19 − 10
= 9 m
Circumference = 2πr
= 2 × 3.14 × 9
= 56.52 m
APPEARS IN
संबंधित प्रश्न
An elastic belt is placed round the rim of a pulley of radius 5 cm. One point on the belt is pulled directly away from the centre O of the pulley until it is at P, 10 cm from O. Find the length
of the belt that is in contact with the rim of the pulley. Also, find the shaded area.
A horse is tied to a pole with 28m long string. Find the area where the horse can graze.
In circle of radius 6cm, chord of length 10 cm makes an angle of 110° at the centre of circle find Length of arc
A rectangular piece is 20m long and 15m wide from its four corners, quadrants of 3.5m radius have been cut. Find the area of remaining part.
Choose the correct alternative answer for the following question.
Find the diameter of the circle whose area is equal to the sum of the areas of two circles having radii 4 cm and 3 cm.
The perimeter of the quadrant of a circle is 25 cm. Find its area.
Find the area and perimeter of the circle with the following :
Radius= 2.8 cm
The area of a circular playground is 22176 m2. Find the cost of fencing this ground at the rate of Rs 50 per metre.
A circular pond is 17.5 m is of diameter. It is surrounded by a 2 m wide path. Find the cost of constructing the path at the rate of Rs 25 per m2.
