Assertion (A) : If we join two hemispheres of same radius along their bases, then we get a sphere.\

Question

Assertion (A) : If we join two hemispheres of same radius along their bases, then we get a sphere.\ Reason (R) : Total surface area of a sphere of radius $r$ is $3 \pi r^{2}$.\

Professor PC Thomas Classes · Answer

(c): Clearly, Assertion is true. Also, total surface area of a sphere of radius $r$ is $4 \pi r^{2}$.\ So, Assertion is true, but Reason is false.\