Question

A circular garden of diameter 21 m is surrounded by a footpath of width 1.4 m. What is the area of the
path?
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Answer 1

98.56

step by step explanation:

d= 21m , radius r = 21/2 = 10.5

diameter of garden including footpath

D =21+1.4 + 1.4= 23.8m ,R = 23.8/2 = 11.9

area of the path A = π(R^2 - r^2)

A =22/7 * (11.9^2 - 10.5^2)

here to make calculation easier, simplify it by using identity

a^2-b^2 = (a-b)(a+b)

A= 22/7 * 1.4 * 22.4 =98.56 m^2

Answer 2

Step-by-step explanation:

option B 98.56 m² is the correct answer