Answer:
( a) Find the lateral area (in square meters) of the prism.
answer:
the lateral area=perimeter of triangle ×height=
(4+5+6)×8=120m²
(b) Find the total area (in square meters) of the prism. (Round your answer to three decimal places.)
answer:
total surface area=lateral surface area +2crossed section area=120+2×(1/2×4×5) =120+20=140m²
(c) Find the volume (in cubic meters) of the prism. answer:
volume of prism=area of base×height=1/2×4×5×8=80m³
