Advertisements
Advertisements
рдкреНрд░рд╢реНрди
Find the circumference of the circle with the following radius: (Take `bb(pi = 22/7`)
21 cm
Advertisements
рдЙрддреНрддрд░
r = 21 cm
Circumference = 2πr
= `2 xx 22/7 xx 21`
= 132 cm
APPEARS IN
рд╕рдВрдмрдВрдзрд┐рдд рдкреНрд░рд╢реНтАНрди
In Fig. there are shown sectors of two concentric circles of radii 7 cm and 3.5 cm. Find the area of the shaded region. Use π = `(\frac { 22 }{ 7 }).`
Find the angle subtended at the centre of circle of radius ‘a’ cm by an arc of length
`(api)/4` ЁЭСРЁЭСЪ
The base of a right – angled triangle measures 48 cm and its hypotenuse measures 50 cm. Find the area of the triangle.
Choose the correct alternative answer for the following question.
The area of a square is the same as the area of a square. Their perimeters are in the ratio
The speed of the car is 66 km/hour. If each wheel of the car is 140 cm in diameter, find the number of revolutions made by each wheel per minute.
The diameter of a circle is 28 cm.
Find its :
(i) Circumference
(ii) Area.
The circumference of a circle is 440 cm. Find its radius and diameter. (Take π = `22/7`)
The circumference of a circle is numerically equal to its area. Find the area and circumference of the circle.
In the formula, C = 2πr, ‘r’ refers to
