Question

please ans fastly....​

Answer 1

this is your answer that you want
thanks

Answer 2

Answer:

1320cm²

Step-by-step explanation:

diameter of cylinder = 4.2dm = 42cm

radius of cylinder = 21cm

height of cylinder = 1dm = 10cm

so,curved surface area of cylinder=2πrh

= 2×22/7×21×10

= 44×3×10

= 1320cm² .....ans.