What is the radius of a circle of one and a half acres?

Answer 1

1 acre = 4840 sq yd

→ 1½ acres = 1½ × 4840 sq yd = 7260 sq yd

area circle = π × radius²

→ radius = √(area_circle ÷ π) = √(7260 sq yd ÷ π) ≈ 48.072 yd

Answer 2

Convert the acres to square feet (assuming you want the radius in feet) or to square yards (if you want the radius in yards); then use the formula for the area of a circle.