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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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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