In a circle of radius 21 cm, an arc subtends an angle of
In a circle of radius 21 cm, an arc subtends an angle of 60° at the centre. Find: (i) The length of the arc (ii) Area of the sector formed by the arc (iii) Area of the segment forced by the …
The radius of a circle is 21 cm. Find the circumference (Take
It is given that, Radius of a circle = $$21$$ cm. We know that $$\pi = 22/7$$, So the circumference of a circle = $$2 \pi r$$ Substituting the values, $$= 2 * 22/7 * 21$$ So we get, …
How much water should be filled in a container 21 cm in height
Let it be filled to height 'h'cm. Then the part not in water is (21-h)cm. So the apparent depth of the filled portion must be (21-h)cm. r e a l d e p t h a p p a r e n t d e p t h = r e f r a c t i v e i n d e …
In a circle of radius 21 cm, an arc subtends an angle of 60 - Toppr
In a circle of radius 21 cm, an arc subtends an angle of 60° at the centre. Find: (i) The length of the arc (ii) Area of the sector formed by the arc (iii) Area of the segment forced by the …
Find the surface area of a sphere, if its diameter is $$21 cm
The surface area of a sphere is 5544 cm 2, find its diameter. View Solution. Q5
In a circle of radius 21 cm, an arc subtends an angle of
Given radius of circle = 21 cm Arc subtends an angle of 60 0 at center. (i) Length of an arc = θ 360 × 2 π r = 60 360 × 2 × 22 7 × 21 = 1 6 × 2 × 22 × 3 = 22 c m
(ii) area of the sector formed by the arc - Toppr
In a circle of radius 21 cm, an arc subtends an angle of 60° at the centre. Find: (i) The length of the arc (ii) Area of the sector formed by the arc (iii) Area of the segment forced by the …
The radius of a circle is 21 cm. Find the perimeter and area of
Radius of a circle, r = 21 cm Perimeter of a quadrant, P = (π 2 + 2) r units = (22 7 × 2 + 2) × 21 = (22 14 + 2) × 21 P = (22 + 28 14) × 21 = 50 14 × 21 = 75 c m. Area of a quadrant, A = π r 2 4 …
The volume of two spheres are in the ratio 64 : 27 . Find the
The volumes of two spheres are in the ratio 27:64. Find their radii if the sum of their radii is 28 cm.
Water is flowing the rate of 15 km per hour through a pipe of
Water is flowing at the rate of 15 km/hr through a pipe of diameter 14 cm into a rectangular tank which is 50 m long and 44 m wide. Find the time in which the level of water in the tank will rise …