Question

2πrh formula ( 2×22÷7×0.5÷2×10×3.5÷10​

Answer 1

Answer:  Curved surface area =5.5 $m^{2}$

Step-by-step explanation:

Curved surface area =2πr*h

Here, Radius=25cm=0.25m

height=3.5

2πr*h=2×22÷7×0.5÷2×10×3.5÷10​

=2*3.14*0.25*10*0.35

=6.28*0.875

=5.49

=5.5 $m^{2}$

Curved surface area =5.5 $m^{2}$