Question

Two cones with same base radius 8 cm and height 15cm are joined together along their bases .find the surface area of the shape so formed

Answer 1

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Answer 2

Answer:

14532.5714 sq.cm.

Step-by-step explanation:

Radius of cone = 8 cm

Height of cone = 15 cm

Curved surface area of cone = $\pi r \sqrt{h^2+r^2} = \frac{22}{7} \times 8 (15^2+8^2)=7266.2857 cm^2$

Area of two cones = 7266.2857+7266.2857=14532.5714 sq.cm.

Hence the surface area of the shape so formed is 14532.5714 sq.cm.