Question

Work out the surface area of the following shape.

Answer 1

Surface area of the figure
$=2[3\times 1+1\times 1+3\times 1]+2[4\times 1+1\times 1+4\times 1]-[1\times 1+1\times 1]=2[3+1+3]+2[4+1+4]-[1+1]=2\left[7\right]+2\left[9\right]-\left[2\right]=14+18-2=32-2=30c{m}^2$