Question

Найдите площадь кругового сектора радиуса 5 см, центральный угол которого равен 72 градуса..помогите мне щас срочно надо

Answer 1

15, 7 квадратных сантиметров

Answer 2

площадь = П*r^2
угол=360
для радиуса 5 см
площадь круга=3,14* 5^2=78,5кв.см
а сектор в 72 гр=(78,5/360)*72=15,7кв.см

Answer 3

Calculation of the Area of a Circular Sector

To find the area of a circular sector, you need to know the radius of the circle and the central angle of the sector. In this case, the radius is given as 5 cm, and the central angle is 72 degrees.

The formula to calculate the area of a circular sector is:

Area = (θ/360) * π * r^2

Where: - θ is the central angle of the sector - π is a mathematical constant approximately equal to 3.14159 - r is the radius of the circle

Let's substitute the given values into the formula:

Area = (72/360) * π * (5 cm)^2

Simplifying the equation:

Area = (1/5) * π * 25 cm^2

Calculating the area:

Area = 5π cm^2

Therefore, the area of the circular sector with a radius of 5 cm and a central angle of 72 degrees is 5π cm^2.

Please note that the value of π is an irrational number and is commonly approximated to 3.14159 for calculations.