Question

csa of a cylinder is 154cm^2 find tsa whose height 14cm​

Answer 1

Step-by-step explanation:

the csa of cylinder is 154cm²

we know that the csa =2πrh

=2×22/7×r×14 = 154

=616/7×r =154

= 88r =154

= r = 154/88

=r=1.75

the radius of cylinder is 1.75cm

the height of cylinder is 14cm

then tsa = 2πr(r+h)

=2×22/7×1.75(1.75+14)

=44/7×1.75(1.75+14)

=77/7(15.75)

=11 ×15.75

= 173.25cm²

the tsa of cylinder is 173.25cm²

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