Question

if the base radius and slant height of right circular cone are 10 cm and 3.5 CM respectively then its total surface area​

Answer 1

Answer:

424.28

Step-by-step explanation:

TSA = πr(r + l)

= 22/7* 10 * (10 + 3.5) = 424.28

Answer 2

Total surface area​ of circular cone is $424.17cm^{2}$

Step-by-step explanation:

Given the base radius of circular cone $r=10cm$

and slant height of circular cone is $l=3.5cm$

We know total surface area of circular cone is $\pi\times r(l+r) cm^{2}$

 so Total surface area is $\frac{22}{7} \times10\times(3.5+10)$

                     $=\frac{22}{7} \times10\times 13.5$

                     $=\frac{22}{7} \times 135$

                    $=3.142\times 135$

                        $=424.17 cm^{2}$

So Total surface area of circular cone is $424.17cm^{2}$