Rectangular triangular land has area 30 square meters and 12 meters long leg. How many meters of the fence do you need for fencing this land?

Correct answer:

x =  30 m

Step-by-step explanation:

A=30 m2 a=12 m  A=ab2  b=2 A/a=2 30/12=5 m  c=a2+b2=122+52=13 m  x=a+b+c=12+5+13=30 m

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