The formula for finding the total surface are | vedclass

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Question

(C) cylinder with cone-shaped lids at both ends consists of the curved surface area of the cylinder and the curved surface areas of the two cones.$1$.

Vedclass · Accepted Answer

$2\pi r(h+l)$

Vedclass · Answer

(C) cylinder with cone-shaped lids at both ends consists of the curved surface area of the cylinder and the curved surface areas of the two cones.$1$. The curved surface area of the cylinder is $2\pi rh$,where $r$ is the radius and $h$ is the height of the cylinder.$2$. The curved surface area of one cone is $\pi rl$,where $l$ is the slant height of the cone.$3$. Since there are two such cones,their combined curved surface area is $2\pi rl$.$4$. The total surface area is the sum of these areas: $2\pi rh + 2\pi rl = 2\pi r(h+l)$.

Part $I$	Part $II$
$1.$ $CSA$ of a cylinder	$a.$ $3\pi r^2$
$2.$ $CSA$ of a sphere	$b.$ $2\pi rh$
$3.$ $CSA$ of a cone	$c.$ $4\pi r^2$
$4.$ $TSA$ of a hemisphere	$d.$ $\pi rl$

The formula for finding the total surface area of a cylinder having cone-shaped lids at both the ends will be $\ldots \ldots \ldots \ldots$

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Which of the following correctly matches the information given in Part $I$ and Part $II$?

Part $I$ Part $II$

$1.$ $CSA$ of a cylinder $a.$ $3\pi r^2$

$2.$ $CSA$ of a sphere $b.$ $2\pi rh$

$3.$ $CSA$ of a cone $c.$ $4\pi r^2$

$4.$ $TSA$ of a hemisphere $d.$ $\pi rl$

The formula to find the total surface area of a $5$-rupee coin is $A = \ldots$

The volume of a $1-$ rupee coin is given by the formula $\ldots \ldots \ldots . . .$

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