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Questions number $19$ and $20$ are Assertion and Reason based questions. Two statements are given, one labelled as Assertion (A) and the other is labelled as Reason (R). Select the correct answer to these questions from the codes (A), (B), (C) and (D) as given below.
(A) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
(B) Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A).
(C) Assertion (A) is true, but Reason (R) is false.
(D) Assertion (A) is false, but Reason (R) is true.
Assertion (A) : The area of canvas cloth required to just cover a heap of rice in the form of a cone of diameter $14$ m and height $24$ m is $175\pi$ sq.m.
Reason (R) : The curved surface area of a cone of radius $r$ and slant height $l$ is $\pi rl$.
(A) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
(B) Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A).
(C) Assertion (A) is true, but Reason (R) is false.
(D) Assertion (A) is false, but Reason (R) is true.
Assertion (A) : The area of canvas cloth required to just cover a heap of rice in the form of a cone of diameter $14$ m and height $24$ m is $175\pi$ sq.m.
Reason (R) : The curved surface area of a cone of radius $r$ and slant height $l$ is $\pi rl$.
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(A) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).