Question

Hlo....

Solve it....​

Answer 1

Answer:

TSA of cone=πr²+πrl

=(22/7×12×12)+(22/7×12×21)

=452.57+792

=1244.57m²

Step-by-step explanation:

hope it helps you

and please follow me

Answer 2

GiVeN :-

CONE ,

• Slant Height (l) = 21m

• Diameter (d) = 24m

To FiNd :-

• Total Surface Area (TSA) of Cone

SoLuTiOn:-

Here,

Diameter(d) = 24m

So,

Radius (r) = d/2 = 24/2 = 12m

Now,

We know that,

Total Surface Area of Cone = πr (r + l)

So,

Total Surface Area of Cone =

$\implies \: \pi \times r(r + l) \\ \\ \implies \: \frac{22}{7} \times 12(12 + 21) \\ \\ \implies \: \frac{264}{7} \times 33 \\ \\ \implies \: \frac{8712}{7} = 1244.57 {m}^{2}$