The curved surface area of a right circular cone of base radius $r$ and height $h$ is given by $\pi r(\sqrt{{h}^{2}+{r}^{2}})$

The assertion correctly states the formula for the curved surface area of a right circular cone, using the Pythagorean theorem to find the slant height as the square root of (h^2 + r^2). The reason also states a correct geometric fact, but since the assertion is a standalone formula rather than a conditional claim, the reason does not explain why the assertion is true. Therefore, both the assertion and reason are correct, but the reason is not the explanation for the assertion.

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• Wrong explanation