Advertisements
Advertisements
प्रश्न
How much distance, in metres, a wheel of 25 cm radius will cover if it rotates 350 times?
Advertisements
उत्तर
Given, radius of wheel (r) = 25 cm = `25/100`m = `1/4`m ...`[∵ 1 cm = 1/100m]`
∵ Distance travelled in one rotation = 2πr = `2 xx 22/7 xx 1/4 = 11/4`m
∴ Distance travelled in 350 rotation = `11/7 xx 350` = 550 m
Hence, the wheel covers 550 m distance.
APPEARS IN
संबंधित प्रश्न
A circle of radius 2 cm is cut out from a square piece of an aluminium sheet of side 6 cm. What is the area of the left over aluminium sheet? (Take π = 3.14)
Find the area of minor segment of a circle of radius 14 cm, when the angle of the corresponding sector is 600 .
In the following figure, the square ABCD is divided into five equal parts, all having same area. The central part is circular and the lines AE, GC, BF and HD lie along the diagonals AC and BD of the square. If AB = 22 cm, find:
the perimeter of the part ABEF.
Find the area of the shaded region in the following figure, if AC = 24 cm, BC = 10 cm and O is the centre of the circle. (Use π = 3.14)
Find the area of a shaded region in the the following figure,where a circular arc of radius 7 cm has been drawn with vertex A of an equilateral triangle ABC of side 14 cm as centre. (Use π = 22/7 and \[\sqrt{3}\] = 1.73)
Write the formula for the area of a sector of angle \[\theta\] (in degrees) of a circle of radius r.
The area of a circular path of uniform width h surrounding a circular region of radius r is
Four equal circles, each of radius 5 cm, touch each other, as shown in the figure. Find the area included between them.
In the given figure, O is the centre of the circle with AC = 24 cm, AB = 7 cm and ∠BOD = 90°. Find the area of shaded region.
Pizza factory has come out with two kinds of pizzas. A square pizza of side 45 cm costs ₹ 150 and a circular pizza of diameter 50 cm costs ₹ 160 (see figure). Which pizza is a better deal?
