√120 = √4√30 = 2√30
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sqrt(120)factor under the radicalsqrt(22 * 30)= 2sqrt(30)=========
square root of (6 x 20) = square root of (120) = 10.95
One square foot = 144 square inches, so 120 sq in. = 0.833r sq ft.
Complete area of the circle = 3*66.99 = 200.97 square units pi*radius2 = 200.97 Divide both sides by pi and then square root both sides radius = 7.998170905 or about 8 units of measurement
8400/70 = 120 feet Check: 70*120 = 8400 square feet