Sanchay put a 1cm stick of gum through a (1 × 3⁻²) machine. How long was the stick when it came out?

Solution:

Sanchay put a 1 cm stick of gum through a (1 × 3⁻²) machine.

We have to find the length of the stick when it comes out.

According to the question,

Input = 1 cm

Workdone = (1 × 3⁻²)

Using the law of exponents,

a⁻ⁿ = 1/aⁿ

So, 3⁻² = 1/3²

= 1/9

Output = 1 × 1/9

= 1/9 cm

Therefore, the length of the stick will be 1/9 cm.

✦ Try This: Sam put a 1cm stick of gum through a (1 × 4⁻²) machine. How long was the stick when it came out?

☛ Also Check: NCERT Solutions for Class 8 Maths Chapter 12

NCERT Exemplar Class 8 Maths Chapter 8 Problem 156

Sanchay put a 1cm stick of gum through a (1 × 3⁻²) machine. How long was the stick when it came out?

Summary:

Sanchay put a 1cm stick of gum through a (1 × 3⁻²) machine. The stick was 1/9 cm when it came out.

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