Question

find the height of a cylinder whose radius is 7cm and total surface area is 968cm Sq. units



Please expalin

Answer 1

area=2×pi×r(r+h)
968=44/7×7(7+h)
968=44(7+h)
968/44=7+h
22=7+h
15=h

the height is 15cm

Answer 2

☆Hello friend☆
Total surface area of cylinder=
$2\pi \: r(h + r)$
$968 {cm}^{2} = 2 \times \frac{22}{7} \times 7cm(h + 7cm)$
22cm=h+7cm
22cm-7cm=h
15 cm = height.
Hope it helps☺