Ajar lid has a diameter of 42 millimeters. Which formula can be used to
calculate the area of the lid?

A = (diameter/2)^2 x pi OR A = pi x (radius)^2

Step-by-step explanation:

To calculate the area of a circle, the following formula is used:

Area = pi x (radius)^2

In the problem, we are provided with the diameter of the circle, which is twice the length of the radius. Remember, the diameter is the length across the circle directly through the middle, whereas, the radius is the length from the edge of the circle to the middle.

TO solve for the area of the circle, we can follow this equation:

Area = pi x (diameter/2)^2

Area = pi x (42/2)^2

Area = pi x (21)^2

Area = pi x (441)

Area = pi441

Area = 1388.44236

The approximate area of the circle, with a diameter of 42 millimeters, and a radius of 21 millimeters, is 1385.44 millimeters squared.

Hope this helps! :)

x = 17

step-by-step explanation:

in the given figure, two triangles are inscribed in a circle where ∠bae ≅ ∠dae which makes the side be and de equal so we can write it as:

3x - 24 = x + 10

solving this equation for x to get:

3x - x = 10 + 24

2x = 34

x = 34/2

x = 17

therefore, the value of x = 17.

e

step-by-step explanation:

an equation by definition has to have two or more variables (x and 2 in this case)