Question

the circumference of the base of right circular cylinder is 154 cm and its height is 1.5 metre find its lateral surface area in metre square​

Answer 1

Answer:

2Πr²=154

where r is 1.5

Answer 2

Answer:

lateral surface area is 2.31 m²

Step-by-step explanation:

circum. = 2πr

     2πr = 154

     2 × 22/7 × r = 154

     r = $\frac{154*7}{2*22}$

     r = 24.5 cm

          (or)

     r = 0.245 m

L.S.A = 2πrh

         = 2 × 22/7 × 0.245 × 1.5

         = 2.31 m²