Question

If the area of an equilateral triangle is 25 under root 3msquare find its perimeter and altitude correct to three significant figures

Answer 1

hii

area of eqiulateral triangle=a²√3/4

4*25√3=a²√3

100=a²

√100=10=a=side

perimeter=3*side

perimeter=3*10=30

by Pythagoras theorem,

5²+hieght²=10²

hieght²=100-25

hieght²=75

hieght=√75
hieght=8.66025...



I hope this is right and will help you

Answer 2

Given that ,
area of equilateral triangle​=25√3 m sq.
but area of equilateral triangle=√3sidesquare/.
4
so, 25√3 = √3sidesquare/4
side sq. =25×4
=100
side = √100
= 10m
perimeter = 3× side
= 3× 10
=30 m
altitude = √125
= 5√ 5 m

I HOPE THIS ANSWER WILL HELP YOU A LOT