Question

Two Cones With Same Base Diameter 16 Cm And Height 15 Cm Are Joint Together Along Their Bases Find The Surface Area Of The Shape So Formed

Answer 1

2πrl

l=v8^2+15^2 = 17cm

2x22/7x8xl7=854.86cm2 (appr)

Answer 2

The Surface Area Of The Shape So Formed is 854.08 sq.cm.

Step-by-step explanation:

We are given that Two Cones With Same Base Diameter 16 Cm And Height 15 Cm Are Joint Together Along Their Bases

So, The surface area of image formed = Curved surface area of both cones

Diameter of cone = 16 cm

Radius of cone =$\frac{diameter}{2}=\frac{16}{2}=8 cm$

Height of cone = 15 cm

Curved surface area of cone = $\pi r \sqrt{h^2+r^2}=3.14 \times 8 \times \sqrt{15^2+8^2}=427.04 cm^2$

So, Curved surface area  both cones = $2 \times \text{CSA of 1 cone} = 2 \times 427.04 = 854.08 cm^2$

Hence The Surface Area Of The Shape So Formed is 854.08 sq.cm.

#Learn more :

Curved surface area of a cone is 220cm^2, its slant height is 10 cm . Find the total surface area of the cone.

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