Question

The error in the tape for 100m is -0.030mm. Calculate the error in taping 2km using the tape

Answer 1

Answer:

It is -0.60 mm

Step-by-step explanation:

100m = -0.030 mm

1 m = - 0.030 / 100

2000 m = - 0.030 × 2000 /100

= - 30×2/100

= - 60/100

= -0.60 mm

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Answer 2

The error in taping 2km using the tape =- 6.

Explanation:

Given : The error in the tape for 100m is -0.030mm.

i.e. The error in the tape for 1 m = $\dfrac{-0.030}{100}=-0.00030\ m$

Since , the error is directly proportional to the length of the tpape.

Therefore , the error in taping of 2km = 2 km x (error in the tape for 1 m )

= 2000 m x (-0.0030)        [Since 2 km = 2000 m]

=-6

Hence, the error in taping 2km using the tape =- 6.

# Learn more :

The amount of chlorine in a swimming pool varies directly with the volume of water. The pool has 2.5 milligrams of chlorine per liter of water. There are 8000 gallons of water in the swimming pool. How much chlorine is in the pool? Round to the nearest thousand milligrams.

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