Lateral Surface Area of Hemisphere
Lateral Surface Area of Hemisphere
Lateral Surface Area of Hemisphere: The curved surface area of hemisphere is known as Lateral surface area of hemisphere. The Lateral surface area of hemisphere of radius r is given by
Illustration: A hemi-spherical dome of a building needs to be painted. If the circumference of the base of the dome is 17.6 m, find the cost of painting it, given the cost of painting is Rs 5 per .
Solution: Given: Circumference of the base of the dome = 17.6 m and let S be the curved surface area of the dom.
As base of the dome is circular. So, we have
Now,
Converting
As the cost of painting = Rs 5
So, cost of painting =
So, cost of painting =
If the lateral surface area of the solid hemisphere is 2772 sq.cm, then find its radius. | |||
| Right Option : A | |||
| View Explanation | |||
Find the radius of the hemisphere if curved surface area of the hemisphere is 2562 sq cm. | |||
| Right Option : C | |||
| View Explanation | |||
A hemisphere is a _____________________ solid which is exactly half of a _______________ | |||
| Right Option : D | |||
| View Explanation | |||
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