127k views
5 votes
Surface are of prisms and spheres! Help!!!!!

Surface are of prisms and spheres! Help!!!!!-example-1

1 Answer

5 votes

Answer:

96 m²

Explanation:

You want the surface area of a triangular prism of height 7 m with bases that are 3-4-5 m right triangles.

Base area

The total area of the two triangular bases is ...

A = 2(1/2)bh

A = (3 m)(4 m) = 12 m² . . . . . . total base area

Lateral area

The lateral area of the prism is the product of the perimeter of a base and the height of the prism.

LA = Ph

LA = (3 +4 +5 m)(7 M) = 84 m²

Surface area

The total surface area of the prism is the sum of the base area and the lateral area:

SA = 12 m² +84 m² = 96 m²

The surface area of the triangular prism is 96 m².

<95141404393>

User OrElse
by
8.3k points

No related questions found