Question

Sides of a triangle are 70cm,80 cm and 90 cm find its area (use root 5 =2.23)

Answer 1

Answer:

Step-by-step explanation

Use herons formula

S=half of perimeter

S=(70+80+90)/2

S=120

Area acc. To herons formula

= √(s(s-a)(s-b)(s-c))

a,b,c are sides of the triangle

=√120(120-70)(120-80)(120-90)

=√120*80*70*30

=√10*10*10*10*12*8*7*3

=100√3*3*4*4*2*7

=100*3*4√14

=1200√14

Answer

And √16=4

√9=3

√14 ~3.7

Answer 2

Step-by-step explanation:

s=120

the answer is 2676

you will understand better when you solve it on your own you will get the semi perimeter as 120 and you will get the area of the triangle 2676

Hope you understand the solution