Question

TSA of a cone whose base radius is 7 cm and slant height is 10cm

Answer 1

Answer:

$tsa \: of \: cone = \pi \: r \: ( l+ r) \\ = \frac{22}{7} \times 7 (10 + 7) \\ = 22 \times 17 \\ 374 \: sq \: cm.$

Therefore TSA of cone is 374 sq cm.

Answer 2

GiveN :-

• Radius of the cone = 7 cm

• Slant height of the cone = 10 cm

To FinD :-

• Total surface area of the cone

SolutioN :-

TSA of cone is :

$\large\longrightarrow \boxed{ \bf \green{ TSA = \pi r(r + l)} }\\ \\ \longrightarrow \sf TSA = \frac{22}{7} \times 7(7 + 10) \\ \\\longrightarrow \sf TSA = \frac{22}{7} \times7 \times 17 \\ \\\longrightarrow \sf TSA = 22 \times 17 \\ \\\longrightarrow \boxed{ \sf TSA = 374 \: {cm}^{2} }$

$\large \therefore \: \underline{ \bf \blue{TSA \: of \: cone \: is \: 374 \: {cm}^{2} }}$