Question

find the total surface area of cone whose diameter of base is 14 metre and slant height is 25 metre​

Answer 1

Answer:

TSA of a cone = 704 $m^{2}$

Step-by-step explanation:

Total Surface Area of a Cone = $\pi rl + \pi r^{2}$

Diameter = 14 Metre

Radius , r = 14/2 = 7 Metre

Slant Height, l = 25 Metre

Therefore TSA = $\frac{22}{7}$ x 7 x 25 + $\frac{22}{7}$ x $7^{2}$

= 22 x 25 + 22 x 7

= 550 + 154 = 704 $m^{2}$