Asquare field measuring 100.0 m long has an area of 1.00 hectare. one acre has an area of 43,600 ft2. if a lot has an area of 12.0 acres, what is the area in hectares?

Find the volume of the described solid.the solid lies between planes perpendicular to the x-axis at x = 0 and x=7. the cross sectionsperpendicular to the x-axis between these planes are squares whose bases run from the parabolay=-31x to the parabola y = 30/x.a) 441b) 147c) 864d) 882