Question

slant height = 3 cm and radius =1.5 cm lenght = 3cm.find the csa ,tsa and volume of cone

Answer 1

Given :-

• Slant height (l) = 3cm
• Radius (r) = 1.5cm
• Height (h) = 3cm

To Find :-

• The CSA , TSA and volume of cone.

Solution :-

☀ Finding Curved surface area of Cone. ☀

↪ CSA of cone = πrl

↪CSA of cone = 3.14 × 1.5 × 3

↪ CSA of cone = 14.13cm².

☀ Finding Total surface area of Cone. ☀

↪ TSA of cone = πr(l + r)

↪ TSA of cone = 3.14×1.5(3 + 1.5)

↪ TSA of cone = 4.71(4.5)

↪ TSA of cone = 21.195cm².

☀ Finding Volume of Cone. ☀

↪ Volume of cone = 1/3 × πr²h

↪ Volume of cone = 1/3 × 3.14 × (3)² × 3

↪ Volume of cone = 1.0467 × 9 × 3

↪ Volume of cone = 1.0467 × 27

↪ Volume of cone = 28.2609cm³.