Answers

2014-10-20T18:38:30+08:00
The length of the sides of a triangle are: y, y+1 & 7cm
so
y+( y+1 )+7 =  56
2y + 1+7 =56
2y +8 =56
y = 48/2 = 24cm
the length of the sides of the triangle are:    24,25 & 7
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2014-10-21T02:56:47+08:00
Perimeter of atriangle=sum of 3 sides    iey+y+1+7 =56   ie 2y+8=56 2y=56-8=48     2y=48   ie  y=48/2=24     
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