find the total surface area of a closed cylinder whose radius is 14 cm and height is 8 cm.
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formula for finding total surface area =2πrh + 2πr2..
radius =14
hieght = 8cm.
2 πrh = 2 × 22/7 × 14 × 8 =
22/7 ÷ 14 = 22 /1 = 2. ( 14 radius is cutted by 7 ).
= 2 × 22 × 2 × 8 = 704
now, 2πr2. = 2 × 22 /7 × 14 × 14
= ( 14 is cutted by 7 again,) so, 14 becomes 2.
= 2×22×2×14 = 1232.
now by the formula we have to plus both , hence
704+1232= 1936
ANSWER✍️✍️: TOTAL SURFACE AREA IS = 1936.
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