<span>To find the length of a circle, you will need the following formula: </span><span>
Having the following data: </span><span> approximate is </span><span> and also the value of the radius (r) of the circumference, known the value of the radius (r), the length of the circumference is given by twice the product of the radius by </span><span>.</span>
<span>A circle is 360° all the way around; therefore, if you divide an arc’s degree measure by 360°, you find the fraction of the circle’s circumference that the arc makes up. Then, if you multiply the length all the way around the circle (the circle’s circumference) by that fraction, you get the length along the arc.</span>
Well the difference in the triangle and rectangle prism is that the equation called for 1/2 of the triangles b times h but the rectangle doesn't get divided by two so if the cross sections are equal the for the rectangle it would be v= 50(2) of v=100