Question

50 two rupees coins are places one above the
ther to form a right circular cylinder. If each
in has radius 1.4 cm and thickness 0.3 cm,
find its total surface area​

Answer 1

Answer:

16.66

Step-by-step explanation:

Surface area of a cylinder = πr^2+πr'2+2πrh=2πr[r+h]

=(22/7×1.4×1.4)+2×22/7×1.4+1.4+0.3

=6.16+8.8+1.4+0.3

=16.66

The answer is 16.66cm