Question

Диаметр 1-й пиццы 40 см, диаметр 2-й 30 см. На сколько 1-Ая пицца больше 2-й?

Answer 1

Первая пицца больше второй на 10 см

Answer 2

To find out how much larger the first pizza is compared to the second one, we can calculate the difference in their areas.

The area of a circle is given by the formula A = πr^2, where r is the radius of the circle.

1. First, let's find the radius of each pizza:

• For the first pizza with a diameter of 40 cm, the radius (r1) is half of the diameter, which is 40 cm / 2 = 20 cm.

• For the second pizza with a diameter of 30 cm, the radius (r2) is half of the diameter, which is 30 cm / 2 = 15 cm.

2. Now, let's calculate the area of each pizza:

• For the first pizza: A1 = π * (20 cm)^2 ≈ 1256.64 cm^2 (rounded to two decimal places).

• For the second pizza: A2 = π * (15 cm)^2 ≈ 706.86 cm^2 (rounded to two decimal places).

3. Finally, let's find the difference in areas:

Difference = A1 - A2 ≈ 1256.64 cm^2 - 706.86 cm^2 ≈ 549.78 cm^2 (rounded to two decimal places).

Therefore, the first pizza is approximately 549.78 square centimeters larger than the second pizza.