Math Is Fun Forum
  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

You are not logged in.

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

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

algabra

please help me again lol.



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 smile


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

Offline

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

ganesh
Moderator
Registered: 2005-06-28
Posts: 15,147

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


Character is who you are when no one is looking.

Offline

Board footer

Powered by FluxBB