Question

answer this question... 45 points...​

Answer 1

Answer:

7.48 metre square

Step-by-step explanation:

we need to find the total surface area of the cylindrical tank.

height(h) = 1m

radius = 140cm/2 = 70cm = 0.7m

total surface area = 2πr( r+h)

= 2*22/7 * 0.7( 1 + 0.7)

= 2*2.2*1.7

= 7.48 metre square

Answer 2

$here \: the \: cylindrical \: tank \: is \: closed \:$

$so \: we \: need \: to \: find \: total \: surface \: area \: of \: cylinder \: in \: {m}^{2}$

$height(h) \: of \: cylinder \: tank \: = 1m$

$base \: radius(r) \: of \: cylindrical \: tank \: = \frac{diameter}{2}$

$= ( \frac{140}{2} )cm = 70cm$

$\frac{70}{100} m = 0.7 \: m$

$area \: of \: sheet \: required \: = total \: surface \: area \: of \: tank \:$

$2\pi \: r \: (r + h)$

$2 \times \frac{22}{7} \times 0.7 (0.7 + 1) {m}^{2}$

$7.48 {m}^{2}$

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