Given:⇒Inner radius =24​=2 cm =r1​⇒Outer radius =24.4​=2.2cm =r2​⇒Height =77 cmSolution:(i) Curved S.A=2πr1​h (inner)=2×722​×2×77=968 cm2(ii) Curved S.A (outer)=2πr2​h=2×722​×2.2×77cm2=(22×22×2.2) cm2=1064.8cm2(iii) Total S.A of pipe = CSA of inner surface + CSA of outer surface + Area of circural base and top=968+1064.8+2π((2.2)2−2π(2)2)=2032.8+5.28 cm2=2038.08 cm2