The area of a rectangular restaurant kitchen is 70square meters. The perimeter is 34meters. What are the dimensions of the kitchen?____ meters by ____ meters
Q. The area of a rectangular restaurant kitchen is 70square meters. The perimeter is 34meters. What are the dimensions of the kitchen?____ meters by ____ meters
Rectangle Area Formula: Let l and w be the length and width of the rectangular kitchen, respectively.We know the area A of a rectangle is given by A=l×w.Given area: 70 square meters.70=l×w
Rectangle Perimeter Formula: The perimeter P of a rectangle is given by P=2l+2w.Given perimeter: 34 meters.34=2l+2w
Simplify Perimeter Equation: We can simplify the perimeter equation to make one variable the subject.Divide the perimeter equation by 2:17=l+wNow, substitute w=17−l into the area equation:70=l×(17−l)
Solve Quadratic Equation: Solve the quadratic equation70=l×(17−l).Expanding it gives:70=17l−l2Rearrange to form a standard quadratic equation:l2−17l+70=0
Factorize Quadratic Equation: Factorize the quadratic equation:(l−7)(l−10)=0So, l=7 or l=10.If l=7, then w=17−7=10.If l=10, then w=17−10=7.Both pairs (7,10) and (10,7) are valid as dimensions of the rectangle.
More problems from Area and perimeter: word problems