Question

37. A toy is made in the shape of a cylinder with one
hemisphere stuck to one end and a cone to
the other. The length of cylindrical part of the
toy is 20cm and its diameter is 10cm. If the
slant height of the cone is 13 cm. Find the
surface area of the
toy.​

Answer 1

Answer:

Slant height of cone = 13 cm

Let h1 cm be the height, l cm be the slant height of the conical part. Then

l² = r²+ h1²

13² = 5² + h ²

169 = 25 + h²

169-25 =h²

144 = h²

h=12cm