<h2>Step-by-step explanation:</h2><h3>Width of rectangle = 7 cm</h3><h3>because ∵ width of rectangle is equal to the radius of each semicircle.</h3><h3>therefore ∴ radius of each semicircle (r) = 7 cm.</h3><h3>therefore ∴ Diameter of each semicircle = 14 cm</h3><h3>therefore ∴ Length of rectangle = 3 x 14 = 42 cm.</h3><h2>Answer:</h2><h3>63.21<em><u>c</u></em><em><u>m</u></em><em><u>'</u></em><em><u>2</u></em></h3><h2><em><u>Please!</u></em><em><u> </u></em><em><u>Mark</u></em><em><u> </u></em><em><u>me</u></em><em><u> as</u></em><em><u> brainliest</u></em><em><u> </u></em><em><u>please</u></em><em><u>.</u></em></h2>
A negative number wouldn't be reasonable in investments because when you invest you are adding money to something. If you invest you aren't removing anything so there can't be negative numbers.
to find the volume of rectangular prisms, multiply its 3 dimensions: length x width x height. The volume is expressed in cubic units. After doing that, you get 120