1.

The base of a prism is an equilateral triangle of perimeter 15 cmand its height is 5 centimetres. Calculate its volume.

Answer»

As the base of triangular prism is equilateral.side=15cm/3=5 cm∴ Area of base = √ 3 / 4 (side)2⇒ Area of base = √3 / 4 x 52⇒ ⇒ Area =( 25÷4 )x 1.73 = 10.83 cm square.Volume of prism = Area of base x heightV= 10.83x 5Volume = 54.15 cm3



Discussion

No Comment Found