Question

please find this ansnwer fast

Answer 1

height=77cm(h)
inner radius=4/2=2cm(r1)
Outer radius=4.4/2=2.2(r2)
i) Inner curved surface area=2 pie r1 h =2×22/7×2×77
=88×11
=968 sqcm
ii)Outer curved surface area=2 pie r2 h
=2×22/7×2.2×77
=44×2.2×11
=1064.8
iii)Total surface area=Inner CSA+Outer CSA+Area of the bases
=968+1064.8+2pie(r2 square-r1 square)
=2032.8+2×22/7(2.2square-2square)
=2032.8+44/7(4.84-4)
=2032.8+44(0.84)/7
=2032.8+5.28
=2038.08
Hope it helps