The perimeter of an isosceles triangle is 1 meter, the base is 40 centimeters. What is the side of this triangle?
| November 25, 2020 | education
As you know, the perimeter is P, which is equal to the sum of all sides.
P = a + b + c
Since the triangle is isosceles, then a = b
P = a + a + c = 2a + c
s = 40 (cm)
P = 2a + 40
100 = 2a + 40
2a = 100-40 = 60 (cm)
a = 60/2 = 30 (cm)
Answer: 30 cm
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