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 corresponding chord
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, $$= 2 * 22 * 3$$ $$= 132$$ cm.
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 x o f w a t e r h 21 − h = 1.33 h = 12 c m hence, 12cm water should be filled in a container.
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 corresponding chord
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.
(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 corresponding chord
The wavelength 21 cm emitted by atomic hydrogen in interstellar …
Most of the hydrogen gas in the interstellar medium is in cold atomic form or molecular form. Hendrik van de Hulst predicted that the cold atomic hydrogen (H) gas should emit a particular wavelength of radio energy from a slight energy change in the hydrogen atoms. The wavelength is 21.1 cm (frequency = 1420.4 MHz).
To what height water should be filled in a container of height 21 …
How much water should be filled in a container 21 cm in height, so that it appears half filled when viewed from the top of the container (given that α μ ω = 4 3 View Solution Q 3
The diameter of a sphere is 21 cm. Calculate its volume - Toppr
The diameter of a sphere is 21 cm. Calculate its volume. A. 4851 c m 3. B. 4000 c m 3. C. 2000 c m 3. D ...
Find the area of the segment of circle, given that the angle of the ...
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 corresponding chord