b) Find the square part whose perimeter is 320 m
a) A door of length 2 m and breadth 1 m is fitted in a wall
. The length of the walls
4.5 m and its breadth is 3.6 m. Find the cost of whitewashing the wall, if the rate of
whitewashing the wall is 200 per m²
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Answer:
Given :-
Perimeter of square park = 320 m.
Perimeter = 4 × side.
320 = 4 × side
side = 80 m.
Area = side².
= 80×80
= 6400 m²
Hence, the area of the square is 6400 m².
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