a volume of a cylinder is 308cm3 it's h is 8cm find Lsa and tsa
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2
your answer is
TSA - 253cm2
CSA/lsa -176cm2
TSA - 253cm2
CSA/lsa -176cm2
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4
Solution :
Let r , h are Radius and height of
the cylinder ,
h = 8cm
Volume = 308 cm³
=> πr²h = 308
=> ( 22/7 ) × r² × 8 = 308
=> r² = ( 308 × 7)/(22×8)
=> r² = ( 7/2 )²
=> r = 7/2 = 3.5 cm
i ) CSA of a cylinder = 2πrh
= 2 × 22/7 × 3.5 × 8
= 176 cm²
ii ) TSA = 2πr( r + h )
= 2 × ( 22/7 ) × 3.5 ( 3.5 + 8 )
= 253 cm²
••••
Let r , h are Radius and height of
the cylinder ,
h = 8cm
Volume = 308 cm³
=> πr²h = 308
=> ( 22/7 ) × r² × 8 = 308
=> r² = ( 308 × 7)/(22×8)
=> r² = ( 7/2 )²
=> r = 7/2 = 3.5 cm
i ) CSA of a cylinder = 2πrh
= 2 × 22/7 × 3.5 × 8
= 176 cm²
ii ) TSA = 2πr( r + h )
= 2 × ( 22/7 ) × 3.5 ( 3.5 + 8 )
= 253 cm²
••••
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