Answers

2015-06-10T16:09:19+05:30
Let the base be x
then altitude = x-7
hypotenuse = 13 cm
by pt
 x2+(x–7)2=132
x2+x2+49–14x=169
2x2–14x+48–169=0
2x2–14x–120=0
x2–7x–60=0  
x2–12x+5 x–60=0
  
x(x–12)+5(x–12)=0
  
(x–12)(x+5)=0
 
x=12 or x=–5
as we know that length of triangle can not be negative
base=x= 2cm 
altitude=12–7=5cm

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