Question

The area of an equilateral triangle is 25 root 3 square metre find its perimeter and altitude correct to three significant figures????

Answer 1

Answer:

Step-by-step explanation:

Area of triangle=25root3

formula=root3*s^2/4

so 25root3=root3*s^2/4

on transposing and subsituting we get a=10

so perimeter=30 m

so altitude= 10^2-5^2=root75

Answer 2

Answer:

30m and 8.66m

Step-by-step explanation:

area of an equilateral triangle =√3/4xside²

here,

____________

side=. / 25√3 X 4

√ √3

=√25x4(√3 will cancel out with denominator)

=√100

=10m²

Perimeter of the triangle,

=side x 3

=10×3

=30m²

In that figure,

AOB or AOC = hy²=p²+b²

=10²=p²+5²

=p =√10²-5²

=p=√100-25

=p=√75

=p=8.66