Question

7. If the area of an equilateral triangle is 1673 square units, then find its sides.
des 20 cm each​

Answer 1

Answer:

ANSWER

Given height of equilateral triangle = 20 cm

Area of equilateral triangle with

height 'h' =

3

h

2

∴ Area of equilateral triangle =

3

(20)

2

=

3

400

×

3

3

=

3

400

3

sq. cm

Given sides of triangle

17 cm . 8 cm . 15 cm

By Pythagorous theorem

(15)

2

+(8)

2

=(17)

2

It is a right angled triangle

∴ Area of triangle =

2

1

×b×h

=

2

1

×15×8

= 60 sq cm