Question

Find the surface area of the given below figure having dimension in cm as shown.

• A. $900c{m}^2$
• B. $880c{m}^2$
• C. $650c{m}^2$
• D. $400c{m}^2$

Answer 1

The correct option is B

$880c{m}^2$

Surface area = CSA of cylinder + CSA
of cone + Base area
$=2\pi rh+\pi rl+\pi r^2=2\pi \left(5\right)\left(20\right)+\pi \left(5\right)\left(11\right)+\pi (5{)}^2=\pi \times 5(40+11+5)=\frac{22}{7}\times 5\times 56=880{\text{cm}}^2$

$\therefore$ Surface area of the figure is $880{\text{cm}}^2.$