Question

5. If height of cone is equal to diameter of base , then its volume will be
6. If minute hand of a clock is of 14cm, then area covered by minute hand ,in 5 minute is

Answer 1

$\huge\large\underline\mathfrak{\red{Answer}} \\ \: let \: height \: of \: cone \: be \: x \: then \: \\ radius \: of \: its \: base \: will \: be \\ \\{\boxed{\green{\underline{\bold{⟹ \frac{x}{2} }}}}} \\ \\As \: diameter \: is \: also \: \large\underline\mathfrak{\blue{x}}\: and \\ \: radius \: will \: become \: \large\underline\mathfrak{\pink{⟹\frac{x}{2}}} \\ \\ \\ {\huge{\underline{\underline{\bold{volume : - }}}}} \\ \\ \: \: \: \: \: \: \: \: ⟹ \huge\frac{1}{3} \pi \: {r}^{2} h \\ \\{ \huge{\boxed{\purple{\underline{\bold{⟹ \frac{\pi {h}^{3} }{12} }}}}}}$

Answer 2

$\huge\large\underline\mathfrak{\red{Answer}} \\ \: let \: height \: of \: cone \: be \: x \: then \: \\ radius \: of \: its \: base \: will \: be \\ \\{\boxed{\green{\underline{\bold{⟹ \frac{x}{2} }}}}} \\ \\As \: diameter \: is \: also \: \large\underline\mathfrak{\blue{x}}\: and \\ \: radius \: will \: become \: \large\underline\mathfrak{\pink{⟹\frac{x}{2}}} \\ \\ \\ {\huge{\underline{\underline{\bold{volume : - }}}}} \\ \\ \: \: \: \: \: \: \: \: ⟹ \huge\frac{1}{3} \pi \: {r}^{2} h \\ \\{ \huge{\boxed{\purple{\underline{\bold{⟹ \frac{\pi {h}^{3} }{12} }}}}}}$