Question

Find the are a of a traingle if its sides are 10cm, 13cm and 17cm.​

Answer 1

Answer:

84cm

Step-by-step explanation:

Answer

Given sides of triangle

a=13,b=14,c=15

Semi-perimeter s=

2

1

(a+b+c)=

2

1

(13+14+15)=21

Area, A =

s(s−a)(s−b)(s−c)

A=

21(21−13)(21−14)(21−15)

A=84 cm

2

Answer 2

a= 10cm

b=13cm

c=17cm

s= (a+b+c) /2

= (10+13+17) /2

= 20

∆ = √s( s-a) (s-b) (s-c)

= √20(20-10) (20-13) (20-17)

= √ 20 . 10 . 7 . 3

= √ 4200 cn^2