Question

Calculate the surface area of this triangular prism.
a. 255 m2
b. 360 m2
c. 468 m2
d. 495 m2

Answer 1

\[SA=3\text{ rectangles}+2\text{ triangles}\]

Answer 2

Is it 225?

Answer 3

SA = 2B + Ph

Answer 4

the rectangles are all different
the triangles are the same

Answer 5

First i got 360 which was wrong

Answer 6

the rectangles are
\[R_1=12\times10\]\[R_2 =15\times10 \]\[R_3 =9\times10\]

Answer 7

the triangles are
\[\frac{9\times12}{2}\]

Answer 8

\[SA=(12\times10)+(15\times10)+(9\times10)+2\times\left(\frac{9\times12}{2}\right)\]

Answer 9

\[\neq225\]