Find the CSA of a cylindrical container of depth 20 m and radius 0.7 m.
22 m2
44 m2
88 m2
11 m2
We know that, Curved surface area (CSA) of the cylindrical vessel = 2πrh. Now, ⇒ CSA = π × 2 ×(710) × 20 ⇒ CSA = 227 × 2 × 710 × 20 ⇒ CSA = 88 m2
If m−1m=5, find :
(i) m2+1m2
(ii) m4+1m4
(iii) m2−1m2