in a rectangle 8 vertical and 4 horizontal lines are drawn find the number of rectangle formed

• 8 vertical lines plus the 2 lines of the existing rectangle(as its mentioned in the question "in a rectangle") accordingly 4 plus 2 horizontal lines.
  therefore
  10C2*6C2= 675 and if its asked for the new rectangle formed than
  675-1=674 (excluding the existing rectangle)
• 8 years agoHelpfull: Yes(29) No(0)
• 6C2 * 10C2=675
• 8 years agoHelpfull: Yes(13) No(7)
• 8 vertical lines
  4 horizontal
  now,2 horizontal and 2 vertical already there in rectangle
  so,
  H=8+2=10
  V=4+2=6
  number of horizontal and vertical lines required to make rectangle=2 each
  so
  10 C 2 * 6 C 2= 675
• 8 years agoHelpfull: Yes(12) No(0)
• 8c2*4c2=168
  
• 8 years agoHelpfull: Yes(7) No(2)
• as relates this to formula ....
  no.of vertical lines are 8 means m=8 and no. of horizontal line n=4
  so,(1+2+3+........+m)(1+2+.....+n) = (1+2+3+.......+8)(1+2+....+4) = (36)(10) = 360
  so no.of rectangle formed is 360
• 8 years agoHelpfull: Yes(3) No(4)
• vertical lines=8
  horizontal lines=4
  one triangle is alredy exisi i:e,2 vertical lines and 2 horizontal lines.
  so, vertical lines=10
  horizontal lines=6
  then,
  10C2*6C2=675
• 8 years agoHelpfull: Yes(1) No(0)
• 7*3= 21rectangles
• 8 years agoHelpfull: Yes(0) No(4)
• 8 verticle means 9 colunm 4 horizontal means 5 =9*5=45
• 8 years agoHelpfull: Yes(0) No(4)
• ractange with 4 hor and 2 verticle line=6
  ractange with 4 hor and 3 verticle line=6*2=12
  ractange with 4 hor and 4 verticle line=12*2=24
  similry
  ractange with 4 hor and 8 verticle line=192*2=384
• 8 years agoHelpfull: Yes(0) No(2)
• 9*5=45 small rectangles formed
  
• 8 years agoHelpfull: Yes(0) No(2)
• 8c2*4c2=168
• 8 years agoHelpfull: Yes(0) No(2)
• 46 RECTANGLES
• 8 years agoHelpfull: Yes(0) No(1)
• there are 8 vertical lines and 4 horizontal lines
  m=8,n=4
  number of rectangle formed is (1+2+3+-------+m )(1+2+3+4+---------+n)
  using this formula
  ans wil be
  360
  
• 8 years agoHelpfull: Yes(0) No(0)
• if ractangal has m row and n column then no of rectangal is given by [1+2+3+.........m][1+2+3+...n] so 15*45=645
• 8 years agoHelpfull: Yes(0) No(0)