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## #1 2005-11-24 12:17:15

kcleigh2
Member
Registered: 2005-11-24
Posts: 13

### algabra

the surface area,A,of a certain object of length,L, is given by the expression

A=    88Lsquared
-----------------
7

calculate the surface area of such an boject if it is 12.5cm long.   I HAVE DO THE ANSER SO THAT IT IS TO THE NEAREST WHOLE NUMBER.

FOR MY ANSWER IS HAVE GOT.

A=  12.5L SQUARED
--------------------       =     23
7

COULD SOMEONE PLEASE LET ME KNOW IF I HAVE GOT THIS RIGHT  PLEASE

THANKS

i am really really really rubbish at maths lol lol lol lol lol lol lol lol lol lol lol lol

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## #2 2005-11-24 16:47:06

ganesh
Moderator
Registered: 2005-06-28
Posts: 21,812

### Re: algabra

A = 88L² /7
When L=12.5 cm,
A= (88*12.5*12.5)/7 = 1964.28571 cm² rounded off to
A=1964 cm²

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