Question

The lenth of a pencil is 18 cm and its diametre is 8 mm what is the ratio of diameter of the pencil to that of its length​

Answer 1

length and the diameter of the pencil are given in different units, we first need to convert them into same unit.

Thus, length of the pencil

= 18 cm = 18 × 10 mm = 180 mm. 8 180 = 2 45 =2:45.

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Answer 2

Answer:

1 cm = 10 mm

18× 10 = 180 mm

ratio of diameter and its length = 8/180

2/45 = 2:45 is the answer