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​

2 thoughts on “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​”

1. Answer:

   Given :

   Length of a pencil = 18 cm

   Diameter = 8 mm

   To Find :

   Ratio of diameter to length

   Solution :

   We are knowing that

   1 cm = 10 mm

   18 cm = 18 × 10 = 180 mm

   Therefore

   Ratio = 8:180

   In simplest form

   4:90

   2:45

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2. Answer:

   • The ratio of diameter of the pencil to that of its length is 2 : 45.

   Step-by-step explanation:

   Given that:

   • The length of a pencil is 18 cm.
   • Its diameter is 8 mm.

   To Find:

   • The ratio of diameter of the pencil to that of its length.

   First converting the length of pencil in mm:

   We know that,

   ∵ 1 cm = 10 mm

   ∴ 18 cm = (10 × 18) = 180 mm

   Finding the ratio of diameter of the pencil to that of its length:

   ⟶ Diameter : Length = 8 mm : 180 mm

   Cancelling mm.

   ⟶ Diameter : Length = 8 : 180

   ⟶ Diameter : Length = (2 × 4) : (45 × 4)

   Cancelling 4.

   ⟶ Diameter : Length = 2 : 45

   ∴The ratio of diameter of the pencil to that of its length = 2 : 45

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