Question 1 :
How many square metres of canvas is required for a conical tent whose height is 3.5 m and the radius of the base is 12 m?

Question 2 :
State true or false: Sphere whose radius = r, the surface area must be $4\pi r^{2}$.

Question 3 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d23bf59b460d7261f56e.jpeg' /> In the above image, a metal pipe is 77 cm long. The inner diameter of a cross section is 4 cm, the outer diameter being 4.4 cm. Find its total surface area.Assume $\pi$ =$\frac{22}{7}$.

Question 4 :
Curved surface area of a right circular cylinder is 4.4 $m^2$ . If the radius of the base of the cylinder is 0.7 m, find its height.Assume $\pi$ =$\frac{22}{7}$.

Question 5 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d238f59b460d7261f56a.jpeg' /> In the above image, the pillars of a temple are cylindrically shaped. If each pillar has a circular base of radius 20 cm and height 10 m, how much concrete mixture would be required to build 14 such pillars?