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A circular park of radius 21 m has a path 7 m wide all around it on the outside. Find the area of the path. (Use $π = \frac{22}{7}$ )

Class 7Area of Paths and BordersPerimeter and Area

A $1386 m^{2}$
B $2464 m^{2}$
C $1078 m^{2}$
D $924 m^{2}$

Step-by-Step Solution

Outer radius = 28

m

. Path =

\frac{22}{7} \times (2 8^{2} - 2 1^{2}) = \frac{22}{7} \times (784 - 441) = \frac{22}{7} \times 343 = 1078 m^{2} . (1386 m^{2}

is the park itself.)

Answer: C)

1078 m^{2}

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