Question

Find the surface area of each figure round your answers to the nearest hundredth if necessary

Answer 1

Answer: 410 square km

Explanation:

The area of each of the triangles with their base on the 10 km side is
`A=(1)/(2)(10)(13.4)`, so their combined area is
`(10)(13.4)=134`.

The area of each of the triangles with their base on the 12 km side is
`(1)/(2)(12)(13)`, so their combined area is
`(12)(13)=156`.

The area of the bottom rectangular face is
`10(12)=120`.

So, the total surface area is
`120+156+134=\boxed{410 \text{ km}^(2)}`