Question

The height of a cone is 16 cm and its base radius is 12 cm find the curved surface area and the total surface area of cone (π = 3.24)​

Answer 1

Answer:

the curved surface area is 14 and total surface area is 52

Answer 2

$\underline\mathfrak\orange{Answer:}$

$\fbox\red{1205.76~ cm²}$

___________________________

$\underline\mathfrak\orange{Explanation:}$

Here, h = 16 cm and r = 12 cm.

So, from l² = h² + r², we have

$~~~~l\:=\:\sqrt{16²+12²} \:cm\:=\:20\:cm$

.

So, curved surface area = πrl

= 3.14 × 12 × 20 cm²

= 753.6 cm²

.

Further, total surface area = πrl + πr²

= (753.6 + 3.14 × 12 × 12)cm²

= (753.6 + 452.16) cm²

= 1205.76 cm²