Question
A tennis court has a length of
and the breath of
. It has an area of
and a perimeter of 28 cm . Determine the values of
and
.
Ask by Savage Ortiz. in South Africa
Mar 20,2025
Upstudy AI Solution
Tutor-Verified Answer
Answer
There are no real values of
and
that satisfy both the area and perimeter given.
Solution
To determine the values of
and
, we can use the given information about the area and perimeter of the tennis court.
Given:
- Area of the tennis court =
- Perimeter of the tennis court =
We know that the area of a rectangle (such as a tennis court) is given by the formula:
And the perimeter of a rectangle is given by the formula:
Let’s denote the length of the tennis court as
cm and the breath as
m. We can set up the equations based on the given information and solve for
and
.
Solve the system of equations by following steps:
Solve the system of equations by following steps:
- step0: Solve using the substitution method:
- step1: Solve the equation:
- step2: Substitute the value of
- step3: Simplify:
- step4: Cross multiply:
- step5: Simplify the equation:
- step6: Expand the expression:
- step7: Move the expression to the left side:
- step8: Multiply both sides:
- step9: Solve using the quadratic formula:
- step10: Simplify the expression:
- step11: Simplify the expression:
- step12: The expression is undefined:
- step13: The system of equations has no solution in the set of real numbers:
- step14: Alternative Form:
The system of equations does not have real solutions. This means that the given information does not lead to a unique solution for the values ofand . Therefore, we cannot determine the exact values of and based on the provided information.
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The Deep Dive
To solve for the values of
and
given that the area of the tennis court is
and the perimeter is
, we can start by using the formulas for area and perimeter.
-
Convert cm to m: Since we want to work in the same units for the calculations, we convert
from cm to meters: . -
Area Formula: The area of the rectangle is given by
. -
Perimeter Formula: The perimeter of the rectangle is calculated by
.
Now we solve these two equations.
From equation (2):
Substituting
in equation (1):
Multiplying the entire equation by 100 to eliminate the fraction:
Rearranging gives us:
Now we can solve this quadratic equation using the quadratic formula
, where
:
This gives two possible values for
:
Using
Using :
Using
Thus, the two potential solutions are:
Now converting these back to the length in cm and m:
- 1000 cm = 10 m
- 4 m = 400 cm
- or vice versa.
Hence, the dimensions can be
and
.