# SOLUTION: From a rectangle , corner is cut in triangular shape to give a pentagon . The length of the sides are 13,19,20,25 and 31 in cm . lengths are not in order . find the area of the pen

Algebra ->  Algebra  -> Surface-area -> SOLUTION: From a rectangle , corner is cut in triangular shape to give a pentagon . The length of the sides are 13,19,20,25 and 31 in cm . lengths are not in order . find the area of the pen      Log On

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 Geometry: Area and Surface Area Solvers Lessons Answers archive Quiz In Depth

 Click here to see ALL problems on Surface-area Question 336572: From a rectangle , corner is cut in triangular shape to give a pentagon . The length of the sides are 13,19,20,25 and 31 in cm . lengths are not in order . find the area of the pentagon. ______ |...........\ |............\ -----> approximate shape |_______|Answer by ankor@dixie-net.com(15645)   (Show Source): You can put this solution on YOUR website!From a rectangle , corner is cut in triangular shape to give a pentagon . The length of the sides are 13,19,20,25 and 31 in cm . lengths are not in order . find the area of the pentagon. : I assigned the dimensions as follow: starting with the hypotenuse of the triangle = 13 the remaining part of that side = 19 bottom = 25 vert side = 31 top = 20 : Find the area of the rectangle without the triangle removed 25 * 31 = 775 : The triangle dimensions: 5 by 12 by 13, prove it is a right triangle: = 13 A = .5 * 5 * 12 = 30 : Pentagon area: 775 - 30 = 745