Answer: Total weight of the metal = 324 kg
Explanation:
The rectangular frame is made of 5 pieces 1 base and 4 sides pieces
The sides of the base is 6m and 8m
2 side piece have the same length as the base, that is 6m and 8m.
The other to sides have length of 6m and 6m
The area of the base = 8×6
= 48m²
weight of metal per meter = 1.5kg
weight of 48m = 48×1.5
=72kg
Similarly for the side with length 8m and 6m
Area = 48m²
weight of each side =72 kg
For side with length 6m and 6m
Area = 6×6
=36m²
Weight of each side =36×1.5
= 54kg
∴ Total weight = 72 + 72 + 72 + 54 + 54
=324kg