Question

circular plates 30 circular plates each of radius 14 cm thickness 3 cm plate on above the other to form a solid find the total surface area of the solid formed

Answer 1

Total height =30×3 =90 cm.
TSA of cylinder = π×r×r×h= (22÷7)×14×14×90
=55440 cubic cm.

Answer 2

Answer:radius = 14 cm

We know that cylinder is obtained when circles of same radius are arrnged obe after another.

Therefore the figure so obtained is a cylinder.

Tsa of cylinder = 2pie r ×(r+h)

Height of cylinder= 30×3=90cm

=2×22/7×14(14+90)

=9152 squareunits cm

Step-by-step explanation: