Question

A box contains 455 candles each of length 140mm and radius 1.6cm , find the volume of wax in the box​

Answer 1

Answer:

candles are cylinder

140 mm into cm

140/100 = 1.4 cm

pi (π)= 22/7

now ,volume of cylinder = πr²h

= π × 1.6 ×1.6 × 1.4

= 22/7×1.6×1.6×1.4

= 11.264 cm ²

for such 455 candles ,

= 455 × 11.264

=5125.12cm²

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hope it helps...