Question

An oil funnel made of tin sheet consists of a 10 CM long cylindrical portion attached to a frustum of a cone. if the total height is 22cm, diameter of a cylindrical portion is 8cm. find the area of the tin sheet required to make the funnel ​

Answer 1

Answer:

Let r 1 and r 2 ( r 1 > r 2) be the radii of ends of the frustum of a cone. Suppose l, h and H be the slant height of the frustum, height of the frustum and height of the cylinder respectively. ∴ r 1 = 9 cm. Thus, the area of tin sheet required to make the oil funnel is 782.6 cm2.

Answer 2

Step-by-step explanation:

Let r 1 and r 2 ( r 1 > r 2) be the radii of ends of the frustum of a cone. Suppose l, h and H be the slant height of the frustum, height of the frustum and height of the cylinder respectively. ∴ r 1 = 9 cm. Thus, the area of tin sheet required to make the oil funnel is 782.6 cm2.

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