Answer:
To find the area of a triangle with sides of length a=60cm, b=70cm and c=50cm, we can use Heron’s formula which states that the area of a triangle with sides of length a, b and c is given by:
A=s(s−a)(s−b)(s−c)
where s is the semiperimeter of the triangle given by:
s=2a+b+c
Substituting a=60, b=70 and c=50 into the formula gives:
s=260+70+50=90
and
A=90(90−60)(90−70)(90−50)≈1500 cm2
Therefore, the area of the triangle is approximately 1500 cm².
Explanation: