The diameter of the base of the right circular cylinder is 28 cm and it’s height is 21cm find C.s.a ,t.s.a,volume .
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Answered by
56
given,
diameter(d)=28cm
radius(r)=d/2 =28/2cm =14cm
height(h)=21cm
C.S.A= 2πrh
=2×22/7×14cm×21cm
=2×22×2cm×21cn
=1848cm²
T.S.A=2πr(r + h)
=2×22/7×14cm×(14cm + 21cm)
=2×22×2cm×35cm
=3080cm²
Volume=πr²h
=22/7×(14cm)²×21cm
=22/7×14cm×14cm×21cm
=22×2cm×14cm×21cm
=12936cm³
diameter(d)=28cm
radius(r)=d/2 =28/2cm =14cm
height(h)=21cm
C.S.A= 2πrh
=2×22/7×14cm×21cm
=2×22×2cm×21cn
=1848cm²
T.S.A=2πr(r + h)
=2×22/7×14cm×(14cm + 21cm)
=2×22×2cm×35cm
=3080cm²
Volume=πr²h
=22/7×(14cm)²×21cm
=22/7×14cm×14cm×21cm
=22×2cm×14cm×21cm
=12936cm³
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22
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