A right pyramid stands on in equilateral triangular base of area `36sqrt(3) cm^(2)`. If the area of one of the lateral face is `42cm^(2)`, then find the volume of the pyramid.

The area of an equilateral triangle is 36 sqrt(3) cm^(2) . Its perimeter is

The base of a right pyramid is an equilateral triangle with area 16 sqrt 3 cm^2 . If the area of one of its lateral faces is 30 cm^2 , then its height (in cm) is: एक लम्ब पिरामिड का आधार एक समबाह त्रिभुज है जिसका क्षेत्रफल 16 sqrt 3 वर्ग सेमी है | यदि इसके एक पार्श्व फलक का क्षेत्रफल 30 वर्ग सेमी है, तो इसकी ऊंचाई ज्ञात करें |

The area of equilateral triangle measure 36sqrt(3)cm^(2) Find the perimeter of triangle.

A right prism stands on a base 6 cm equilateral triangle and its volume is 81sqrt(3) cm^(3) . The height (in cm) of the prism is