Two identical scales are joined such that 21 cm mark of one scale is coinciding with 21 cm mark on the other scale. A line ‘X’ is measured as shown. Find the length of the line.

27 mm

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140 mm

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280 mm

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28 mm

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Solution

The correct option is C 280 mm
The length of the line measured from left scale = 21 cm.

The length of the line measured from right scale = 21 - 14 cm = 7 cm.

Therefore, the total length of the line X
= 21 + 7= 28 cm = 280 mm
(Since, 1 cm = 10 mm)

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Two identical scales are joined such that 21 cm mark of one scale is coinciding with 21 cm mark on the other scale. A line ‘X’ is measured as shown. Find the length of the line.

The correct option is C 280 mmThe length of the line measured from left scale = 21 cm. The length of the line measured from right scale = 21 - 14 cm = 7 cm. Therefore, the total length of the line X = 21 + 7= 28 cm = 280 mm (Since, 1 cm = 10 mm)

The correct option is C 280 mm
The length of the line measured from left scale = 21 cm.

The length of the line measured from right scale = 21 - 14 cm = 7 cm.

Therefore, the total length of the line X
= 21 + 7= 28 cm = 280 mm
(Since, 1 cm = 10 mm)