Advertisements
Advertisements
प्रश्न
Find the circumference of the circles whose radii are given below.
91 mm
Advertisements
उत्तर
Radius r = 91 mm
Circumference C = 2πr units
= `2 xx 22/7 xx 91`
= 2 × 22 × 13
= 44 × 13
= 572 mm
APPEARS IN
संबंधित प्रश्न
The radius of a sector of a circle is 7 cm. If the measure of the arc of the sector is - three right angles; find the area of the sector in case.
Choose the correct alternative answer for the following question.
The curved surface area of a cylinder is 440 cm 2 and its radius is 5 cm. Find its height.
The circumferences of two circles are in the ratio 2: 3. What is the ratio between their areas?
Find the area of a quadrant of a circle whose circumference is 88 cm.
The radius of the circle is given below; find the area.
28 cm
Find the curved surface area , the total surface area and the volume of a cone if its :
Height = 12 cm , radius = 5 cm
The inner circumference of a circular track is 264 m and the width of the track is 7 m. Find:
(i) the radius of the inner track.
(ii) the radius of the outer circumference.
(iii) the length of the outer circumference.
(iv) the cost of fencing the outer circumference at the rate of ₹50 per m.
The diameter of a circle is 5.6 cm. Find its circumference.
Find the area and perimeter of the circles with following: Radius = 2.8cm
In covering a distance s metres, a circular wheel of radius r metres makes `s/(2πr)` revolutions. Is this statement true? Why?
