Question

What is the greatest length of tape whose length can be used a number of times to measure length 56 cm and 140 cm exactly?

Answer 1

Answer:

The greatest length of a measuring tape = 20 cm

GIVEN:

Length = 440 cm and 820 cm

TO FIND:

The greatest length of a measuring tape.

SOLUTION:

Firstly we have to find the HCF of 440 cm and 820 cm

Prime factorisation:

=> 440 = 2*2*2*5*11

440 = 2*2*2*5*11=> 820 = 2*2*5*41

HCF = 2*2*5

= 20

The greatest length of a measuring tape = 20 cm

Step-by-step explanation:

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