Question

Знайдіть радіус кола, вписаното ворикутник зі сторонами 7 см, 15 см і 20 см.​

Answer 1

Ответ:

2см

Объяснение:

S=√(p(p-a)(p-b)(p-c))

p=(a+b+c)/2=(7+15+20)/2=21см полупериметр треугольника.

S=√(21(21-7)(21-15)(21-20))=√(21*14*6*1)=

=√(3*7*2*7*2*3)=7*2*3=42см²

S=p*r,→

r=S/p=42/21=2см

Answer 2

Finding the Radius of the Inscribed Circle in a Triangle

To find the radius of the circle inscribed in a triangle, we can use the formula:

radius = (area of the triangle) / (semiperimeter of the triangle)

The semiperimeter of a triangle is half the sum of its three sides.

In this case, we have a triangle with sides measuring 7 cm, 15 cm, and 20 cm.

Calculating the Area of the Triangle

To calculate the area of the triangle, we can use Heron's formula:

area = sqrt(s * (s - a) * (s - b) * (s - c))

where: - s is the semiperimeter of the