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Subjects
Mathematics State Board
Class 10
Mensuration
Surface Area of a Sphere, Hemisphere, Hollow Hemisphere and Frustum of a cone
1.
Multiple choice question
Exercise condition:
2
m.
1
. If two solid hemispheres of same base radius '\(r\)' units are joined together along their bases, then curved surface area of this new solid is:
\(2 \pi r^2\) \(sq. units\)
\(3 \pi r^2\) \(sq. units\)
\(8 \pi r^2\) \(sq. units\)
\(4 \pi r^2\) \(sq. units\)
2
. The total surface area of a hemi-sphere is how much times the square of its radius.
\(2 \pi\)
\(3 \pi\)
\(4 \pi\)
\(\pi\)
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