Question

3. Find the area of a triangle whose sides are
18 cm, 24 cm and 30 cm.​

Answer 1

Answer:

apply hero's formula. get hero's formula from teacher

Answer 2

Answer:

216sq cm

Step-by-step explanation:

It's a scalene triangle

area of scalene triangle=

$\sqrt{s \times (s - a)(s - b)(s - c)}$

where a, b and c are sides of triangle and s = (a+b+c)/2

s = (18+24+30)/2

= 72/2=36

s-a= 36-18= 18

s-b= 36-24= 12

s-c= 36- 30= 6

area of triangle= √ 36 × 18 × 12 × 6

= √6×6×6×3×6×2×6

=√6^6

=6^3

=216sq cm.