The perimeter of the triangle is 32 cm, and its area is 60 cm. Find the sides of the rectangle.
September 11, 2021 | education
| Let’s say that the length of the figure is a cm, while the width is in cm.
We get the following system of equations:
2 * (a + b) = 32 cm.
a * b = 60 cm2
Express the sum of the width and length values from the first equation.
a + b = 32/2.
a + b = 16.
We express the value of a.
a = 16 – c.
Substitute the value a into the second equation.
(16 – in) * in = 60.
16 * in – in ^ 2 – 60 = 0.
b ^ 2 – 16 * b + 60 = 0.
On the Vieta’s tower we get:
a = 10 cm.
h = 6 cm.
Examination:
2 * (10 + 6) = 2 * 16 = 32 cm.
10 * 6 = 60 cm2
Answer:
10 and 6 cm.
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