Solution:
Note that:
- Surface area = 2(LW) + 2(LH) + 2(WH)
- LW = 5 x 2
- LH = 5 x 4
- WH = 2 x 4
Substitute the values to obtain the surface area.
- 2(LW) + 2(LH) + 2(WH)
- => 2(5 x 2) + 2(5 x 4) + 2(2 x 4)
- => 2(10) + 2(20) + 2(8)
- => 20 + 40 + 16
- => 76 yd²
The surface area of the prism is 76 yd².
