Question

enjoy 50 points back to back

Answer 1

Given that, diameter(d) of cylinder is 1.4 m and length(h) is 8 m.
⇒ the radius of sphere(r) = radius of cylinder
⇒ surface area of tank = surface area of cylinder + 2(surface
Area of hemisphere)
= 2πrh + 2(2πr2)
= 2πr(h + 2r)

= 41.36 m2
⇒ ∴ the cost of painting it on the outside at rate of D20 per m2
= 41.36 × 20
= D827.20

Answer 2

hey MATE!

HERE IS UR ANSWER!

EXTERNAL DIAMETER OF CYLINDER IS 1.4 M,radius =0.7m

LENGTH =8M

AREA OF CYLINDER=2*Pi*r (h+r)

2×22/7*0.7*(8+0.7)

44/7×0.7*8.7

41.36metre square.

cost =20×41.36

=827.20 rupees

HOPE IT HELPS

MARK BRAINLIEST PLZ♥♥♥