Question

5. A glass jar has a plastic lid. The jar and the lid are both cylindrical. The radius and the height of the jar are 3.5 cm and 10 cm and those of the lid are 3.6 cm and 1.3 cm. Find the surface area of the glass and of the plastic lid separately. [HOT]​

Answer 1

Step-by-step explanation:

this is a most important question

Answer 2

Answer:

Step-by-step explanation:

lid and the jar are open cylinders.

Surface area of an open cylinder

Lid

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

= 40.73 +29.42 = 70.15

(Pi r²)(pi2rh)

(22/7××3.5×3.5)(2×22/7×3.5×10)

38.5+220

=258.5

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