Question

The product of the last two digits of thesurface area0.5 ft.0.3 ft2 ft0.4 ft

Answer 1

The surface area of the shape is given as:

`\begin{gathered} A_1=2* A_(triangle) \\ A_1=2*(1)/(2)* base* height \\ A_1=2*(1)/(2)*0.4*0.3 \\ A_1=0.12ft^2 \\ \\ A_2=Area\text{ of the rectangular base=0.4}*2 \\ A_2=0.8ft^2 \\ \\ A_3=Area\text{ of the surface top=}0.5*2 \\ A_3=1ft^2 \\ \\ A_4=Area\text{ of the rec}\tan gle\text{ on the left side=0.3}*0.2 \\ A_4=0.06ft^2 \end{gathered}`

Total surface area= 0.12 + 0.8 + 1 + 0.06 = 1.98

Hence, the product of the last two(2) digits is: 9 x 8 = 72 square feet