Question 356143
the sail abc has side length a-b = 5 metres b-c = 6 metres and a-c=7 metres what is the area
sides are 5,6,7
sum of all sides = 18
1/2 perimeter = 9 =s
...
{{{Area = sqrt(s(s-a)(s-b)(s-c))}}}
{{{Area = sqrt(9(9-5)(9-6)(9-7))}}}
{{{Area =sqrt((9*4*3*2))}}}
{{{area = sqrt(216)}}}
area = 14.7 m^2