Question

Please help me!14. Find the surface area of the triangular prism below. Show your work. ​

Answer 1

Answer:

186.94 cubic ft

Step-by-step explanation:

A=2AB+(a+b+c)h

AB=s(s﹣a)(s﹣b)(s﹣c)

s= $\frac{a + b + c}{2}$

A=ah+bh+ch+$\frac{1}{2}$ $\sqrt{-a4+2(ab)2+2(ac)2-b4+2(bc)2-c4}$

6.2·5.5+8.5·5.5+9.8·5.5+$\frac{1}{2}$ ≈$\sqrt{-6.24+2(6.2x8.5)2+2(6.2x9.8)2-8.54+2x(8.5x9.8)2-9.8x^{4}$

≈ 186.94 ft cubed