Question

A cylinder is surmounted by a cone as shown in the figure. Find the total surface area solid formed. (in $c{m}^2$). (Take $\pi =3.14$)

• A. 900
• B. 855.05
• C. 820.75
• D. 830.75

Answer 1

The correct option is B

855.05

Total surface area = circular base area of cylinder + curved surface area of cylinder + curved surface area of cone

Total surface area = $\pi r^2+2\pi rh+\pi rl$

Total surface area = $\pi r(r+2h+l)$

Total surface area = $3.14\times 5(5+40+13)$

Total surface area = $15.7\times 58$

Total surface area = 910.6 $c{m}^2$