y = 3√x
y = 3x^(1/2)
y' = 3(1/2)x^(1/2 -1)
y'= (3/2)x^(-1/2)
y' = 3/[2x^(1/2)]
y' = 3/(2√x)
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22 x 24 = 528 sq ft. 1 sq yard = 9 sq ft (3 x 3). So 528 sq ft = 58.67 sq yards
1 yard = 3 feet 1 sq yard = 3 x 3 = 9 sq feet 5 x 46 = 230 sq ft = 230 ÷ 9 = 25.56 sq yd (2dp)
Assuming 18 inch x 24 inch, result = (18/12) x (24/12) sq feet = 1.5 x 2 = 3 sq feet
1 acre is 4840 sq yards. Now 1 sq yard = 9 sq feet (3 feet x 3 feet), so 1 acre = 43560 sq feet. your area is 170 x 70 sq feet = 11900 sq feet. So this is 11900/43560 of an acre, answer = 0.273 acre.
√108 = √(36 x 3) = √36 x √3 = 6√3