Q. A rectangular goat pen has an area of 24square meters and a perimeter of 20meters. What are the dimensions of the pen?____ meters by ____ meters
Define Area Formula: Let l and w be the length and width of the rectangular goat pen, respectively. The area of a rectangle is given by the formula Area=l×w.
Area Equation: Given the area is 24 square meters, we have the equation 24=l×w.
Define Perimeter Formula: The perimeter of a rectangle is given by the formula Perimeter=2(l+w). Given the perimeter is 20 meters, we have the equation 20=2(l+w).
Perimeter Equation: Simplify the perimeter equation to find l+w. 20=2(l+w) simplifies to 10=l+w.
Simplify Perimeter: We now have two equations: 24=l×w and 10=l+w. We can solve these equations simultaneously. Substitute w=10−l into the area equation.
Substitute for Area: Substituting gives 24=l×(10−l). Expanding this, we get 24=10l−l2. Rearranging gives l2−10l+24=0.
Expand and Rearrange: Factorize the quadratic equation: l - 6)(l - 4) = 0\. So, \$l = 6 or l=4. If l=6, then w=10−6=4. If l=4, then w=10−4=6.
More problems from Area and perimeter: word problems