Question

can u help me solve this

Answer 1

We can do this in many ways but I will use Heron's formula i.e:


√s(s-a)(s-b)(s-c)


s=semi perimeter


s= 70+80+90/2

=>240/2 or 120

√120(120-70)(120-80)(120-90)

√120(50)(40)(30)

√7200000

2683.28. cm²

the answer will be same using all methods

pls mark me as brainliest