Question

7. A public park, in the form of a square, has an area
of (100+ 0.2) m2. The side of park is
(1) (10 + 0.01) m (2) (10 + 0.1) m
(3) (10 + 0.02) m (4) (10 + 0.2) m​

Answer 1

Explanation:

Let the side length of the square park is l.

The area of a square is given as,

A=l2

100=l2

l=10m

The error in length is given as,

AΔA=2lΔl

1000.2=210Δl

Δl=0.01m

Thus, the side of the park is (10±0.01)m

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