Answer: 468 square centimeters
Step-by-step explanation:
The surface area of each of the triangular base is
where a and b are the perpendicular legs of triangle (the triangular base must be right triangle)
⇒The surface area of each of the triangular base
The third side of triangular base =
Then the lateral areas of each rectangle of dimensions 10 × 9, 10 × 12, and 10 × 15.
Thus the total lateral area is
The total surface area is