Answer:
Step-by-step explanation:
Given composite figure is made up of two solids.
Top part is a triangular prism and the bottom is a rectangular prism.
Volume of the composite solid = Volume of the triangular prism + Volume of the rectangular prism
Volume of the triangular prism = Area of the triangular base × Height of the prism
= [tex]\frac{1}{2}(\text{Base})(\text{Height}) \times (\text{Height of the prism})[/tex]
= [tex]\frac{1}{2}(4\times 6)\times 10[/tex]
= 120 square m
Volume of the rectangular prism = Length × Width × Height
= 6 × 10 × 6
= 360 m²
Total volume of the composite solid = 120 + 360 = 480 m²
Option A is the answer.