Question

a glass jar has a plastic lid the jar and lead are both cylindrical the radius and the height of the jar 3.5 cm and 10 cm and dose of the leader 3.6 cm and 1.3 cm find the surface area of the glass and the plastic lid separately answer is given148.5cm^2 and 55.4cm^2

Answer 1

Answer:

Step-by-step explanation:

Note :

Both the lid and the jar are open cylinders.

The formula for getting the surface area of a cylinder is as follows :

Surface area of an open cylinder equals :

(pie × r × r) + (pie × 2r × height of the cylinder)

Surface area of the cylinder jar :

(22/7 × 3.5 × 3.5) + (22/7 × 2 × 3.5 × 10)

= 38.5 + 220 = 258.5

Surface area of the lid :

(22/7 × 3.6 × 3.6) + (22/7 × 2 × 3.6 × 1.3)

= 40.73 + 29.42 = 70.15

Answer 2

Step-by-step explanation:

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