The bottom edge of a triangular prism is an equilateral triangle with a side length of 5cm, and the side edge length is 10cm

The bottom edge of a triangular prism is an equilateral triangle with a side length of 5cm, and the side edge length is 10cm

Total area of triangular prism
= 10×5×3 + 5×5×cos60°
= 150 + 21.65
=171.65 square centimeter