Calculate the plane surface of cylinder having the curved surface area 1848sq. cm and sum of radius and height 35cm

Area of plane surface of cylinder = 2772 sq.cm.

Step-by-step explanation:

Let r be the radius and h be the height of the cylinder.

Curved Surface Area = 1848 sq.cm

2πrh = 1848

2××rh = 1848

rh = 1848 × ×

rh = 294

Sum of radius and height = 35

r + h = 35 --- (1)

Now,

r - h =

=

=

=

= 7

r - h = 7 --- (2)

Adding (1) and (2),

2r = 42

r = 21  cm.

Area of the plane surface = 2 × π

= 2 × × 21 × 21

= 2772 sq.cm.

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step-by-step explanation: