Q. 95.0( 3 Votes )

Answer :

Height of the frustum, h = 8m

Radii of frustum are: r’ = 13m and r’’ = 7m

Let l be the slant height of the frustum

⇒ l = 10cm

Curved surface area of frustum, A’ = π (r’ + r’’) × l

= π (13 + 7) × 10

= 628.57 cm^{2}

Slant height of the conical cap = 12m

Base radius of the cap = 7m

Curved surface of the cap, A’’ = πrl

= π × 7 × 12

= 264m^{2}

Total canvas required = A’ + A’’

= 628.57 + 264

= 892.57 m^{2}

∴ Total canvas = 892.57 m^{2}

Rate this question :

How useful is this solution?

We strive to provide quality solutions. Please rate us to serve you better.

PREVIOUSThe radii of the circular bases of a frustum of a right circular cone are 12 cm and 3 cm and the height is 12 cm. Find the total surface area and the volume of the frustum.NEXTA reservoir in the form of the frustum of a right circular cone contains 44 × 107 litres of water which fills it completely. The radii of the bottom and top of the reservoir are 50 metres and 100 metres respectively. Find the depth of water and the lateral surface area of the reservoir.