Math, asked by prasadrajendra27347, 7 hours ago

Therefore, 15 cm is the greatest length of a scale that can measure exactly 30cm, 90cm, 1m 20cm, and 1m 35cm lengths. Therefore, 15 cm is the greatest length of a scale that can measure exactly 30cm, 90cm, 1m 20cm, and 1m 35cm lengths.


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Answers

Answered by maitreebagohil
1

Answer:

15 cm

Explanation:

1m 20 cm = 120 cm

1m 35 cm = 135 cm

Greatest length = HCF of 30, 90, 120 and 135

30 = 2 x 3 x 5

90 = 2 x 3 x 3 x 5

120 = 2 x 2 x 2x3x5

135= 3 x 3 x 3 x 5

HCF = 3 x 5 = 15

Therefore, 15 cm is the greatest length of a scale that can measure exactly 30cm, 90cm, 1m 20cm, and 1m 35cm lengths.

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