Question

can any one tell me fast I have tomorrow test​

Answer 1

Step-by-step explanation:

perimeter of ∆= sum of all side

300= 100+60+x

300= 160+x

140= x

hence third side is 140

semi perimeter = perimeter/2

semi perimeter = 300/2

semi perimeter = 150

a/c to herons formula,

area of ∆= √s(s-a)(s-b)(s-c)

= √150(150-100)(150-60)(150-140)

= √150×50×90×10

= √6750000

= √100²× 15²×3

= 15×100√3

= 1500√3

#666