A circle has a radius of 9.5 centimeters. What is the area of the circle?Use 3.14 for pi

Formula for the area of a circle:

A = πr²       (A = area     π(pi) = 3.14      r = radius)

You know:

r = 9.5 cm      and you're using 3.14 for π, so substitute/plug it into the equation

A = πr²

A = (3.14)(9.5)²     Find 9.5²

A = (3.14)(90.25)

A = 283.385 cm²

The number of boys in the class is 12

The number of girls in the class is 20

Step-by-step explanation:

Given as :

The ratio of boys to girls in school classroom = 3 : 5

The Total number of students in class = 32

Let The number of boys in class = 3 x

And The number of girls in class = 5 x

According to question

The Total number of students in class = The number of boys in class + The number of girls in class

Or, 3 x + 5 x = 32

Or, 8 x = 32

∴   x =

I.e x = 4

So, The number of boys in class = 3 x = 3 ×4 = 12

And The number of girls in class = 5 x = 5 ×4 = 20

Hence The number of boys in the class is 12

And The number of girls in the class is 20   Answer