The perimeter of an equilateral triangle is $60 \, m$. The area is

Find the area of the equilateral triangle having length of each side $50\, cm$.

The area of an equilateral triangle is equal to ............

$A$ triangle and a parallelogram have the same area. If the sides of the triangle are $10 \, cm$,$17 \, cm$,and $21 \, cm$,and the parallelogram stands on the base $12 \, cm$,find the height of the parallelogram. (in $, cm$)

If each side of a triangle is doubled,then find the ratio of the area of the new triangle thus formed to the area of the given triangle.

$A$ rhombus shaped field has green grass for $18$ cows to graze. If each side of the rhombus is $30\, m$ and its longer diagonal is $48\, m$,how much area of grass field will each cow be getting (in $, m^{2}$)?