A defective scale reads 0.75 cm when it measures 1 cm. What will it read when measuring a 10 cm long stick?

0.75 cm

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10 cm

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75 mm

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750 mm

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Solution

The correct option is C 75 mm
The reading of the scale on measuring 1 cm = 0.75 cm

So, when a 10 cm long stick is measured, the reading show by the scale = 10 x 0.75 = 7.5 cm

We know that 1 cm = 10 mm.
So, 7.5 cm = 7.5 x 10 = 75 mm

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A defective scale reads 0.75 cm when it measures 1 cm. What will it read when measuring a 10 cm long stick?

The correct option is C 75 mmThe reading of the scale on measuring 1 cm = 0.75 cm​ So, when a 10 cm long stick is measured, the reading show by the scale = 10 x 0.75 = 7.5 cm ​ We know that 1 cm = 10 mm.​ So, 7.5 cm = 7.5 x 10 = 75 mm​

The correct option is C 75 mm
The reading of the scale on measuring 1 cm = 0.75 cm

So, when a 10 cm long stick is measured, the reading show by the scale = 10 x 0.75 = 7.5 cm

We know that 1 cm = 10 mm.
So, 7.5 cm = 7.5 x 10 = 75 mm