Question

A right prism of length 10cm has it cross section as an equilateral triangle of size 6cm. Find its volume

Answer 1

area of equilateral triangle=
$\sqrt{3} \times {a }^{2} \div 4$
=
$9 \sqrt{3}$
volume of prism=area of cross section * length=
$9\sqrt{3} \times 10$
=
$90 \sqrt{3}$