Question

Help me with surface area plssss

Answer 1

Answer: The surface area of the given cylinder is: " 747. 32 in² " .

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Step-by-step explanation:
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The formula for the "Surface Area, "S. A." , of a cylinder :

" S.A. = 2
`\pi` r² + 2
`* \pi` * r * h " ;

in which:
`\pi` = 3.14 (we shall use this approximation) ;

S.A. = surface area (in "square units" ;
in our case, "square inches" ;
or; " in² " ) ;
r = radius = 7 in.

h = height = 10 in.
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Let us plug in our "known" — and/or "given" — values ; into the formula & solve for the "S.A." (surface area of this "cylinder") :
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→ S.A. = 2
`\pi` r² + 2 *
`\pi` * r * h ;


→ S.A. = 2 (3.14) * (7 in.)² + 2 * (3.14) * (7 in) * (10 in) ;

→ S.A. = [ 2 * (3.14) * (7²) * (in²) ] + ( 2 * 3.14 * 70 * in²) ;

= ( 2 * 3.14 * 49 * in² ) + (439 .6 * in²) ;

= (307. 72 in²) + (439 .6 in²) ;

= 747. 32 in² ;
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→ Note: This answer is already rounded to the nearest hundredth. Apparently, the "image attached" mentioned to round the answer "to the nearest hundredth"; however, this part of the "image attached" appears to have been "cut off" .
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→ This answer is already rounded to the nearest hundredth.
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Answer: The surface area of the given cylinder is: " 747. 32 in² " .
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