1.

A jokers cap in the form of a right circular cone of base radius 7cm and height 27cm find the area of the sheet required to make 10 such cones​

Answer»

align="absmiddle" alt="\underline{\underline{\green{\textbf{Step - By - Step - Explanation : -}}}}" class="latex-formula" ID="TexFormula1" src="https://tex.z-dn.net/?f=%5Cunderline%7B%5Cunderline%7B%5Cgreen%7B%5Ctextbf%7BStep%20-%20By%20-%20Step%20-%20Explanation%20%3A%20-%7D%7D%7D%7D" title="\underline{\underline{\green{\textbf{Step - By - Step - Explanation : -}}}}">

To Find :

we need to find the area of sheet required to make 10 cones

Solution :

Radius of BASE = 7cm

Height = 27cm

\boxed{\underline{\red{\bf{Slant\: height= \sqrt{r^{2}+h^{2}}}}}}

Slant height = √7² + 27²

l = √49 + 729

l = √778

l = 27

\boxed{\underline{\red{\bf{Curved\: <klux>SURFACE</klux>\:Area\:of\:<klux>CONE</klux>=\pi{rl}}}}}

CSA Of 1 cone :

⠀⠀⠀⠀⠀⇛CSA = π × 7 × 27

⠀⠀⠀⠀⠀⇛CSA = 22/7 × 7 × 27

⠀⠀⠀⠀⠀⇛CSA = 594 cm²

Curved surface area of ONE cone is 594cm²

Curved surface area of 10 cones

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀ = 10 × 594

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀= 5940 cm²

━━━━━━━━━━━━━━━━━━━━━━━━━



Discussion

No Comment Found