Question

in a triangle length of 2 sides are 80, 20cm respectively and the angle between them is 30°. Calculate area of the triangle
pls help​

Answer 1

Step-by-step explanation:

1/2 base ×height =area

1/2 80×20= 800

Answer 2

Answer:

According to the Heron's formula, Area (A) of the triangle having sides a,b,c units is

A=

s(s−a)(s−b)(s−c)

where

s=

2

a+b+c

For the given triangle,

a=18 cm

b=24 cm

c=30 cm

s=

2

18+24+30

=36

A=

36(36−18)(36−24)(36−30)

A=

36×18×12×6

A=

216×216

=216 cm

2

Smallest side =18 cm

Area of the triangle =

2

1

×base×altitude=216

2

1

×18× altitude=216

Altitude =

9

216

=24 cm