Question

Find the greatest length of a measuring tap which can be used to measure exactly 440 cm and 820 cm​

Answer 1

Answer:

Greatest length of a measuring tape = 20 cm

GIVEN:

Length = 440 cm and 820 cm

TO FIND:

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

Greatest length of a measuring tape = 20 cm

NOTE:

some important formulas

LCM * HCF = product of two number.

let 'a' be any positive integer which is divided by 'b'. we get some quotient 'q' and remainder 'r'

(Representation) => a = bq + r

Answer 2

Answer:

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Step-by-step explanation:

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