The size of a rectangle are 3cm 5cm and 6cm what is it area
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A is the area of the triangle And a,b,c are the sides of the triangle So if a=3 cm ,b=5 cm and c=6 cm thus , Using Heron's Formula we get the semi-perimeter as 7 cm and the area as A= sqrt(7*(7-3)(7-5)(7-6)) thus A= sqrt(7*4*2*1)=sqrt(56)=7.48 sq. cm. thus the area of the triangle with side 3 cm,5 cm and 6 cm is 7.48 sq cm.
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