answersLogoWhite

0

The area (A) of a circle is A = π . r2

The diameter (D) is equal to D = r / 2 . Were r is the radius.

If the diameter of the circle is 45 mm, and we divide it by 2. We will obtain the radius which is equal to 22,5mm: D = 45mm / 2 = 22,5mm

If we square this radius the result is 506,25mm2: r2 = (22,5mm)2 = 506,25mm2

So the area of the circle of diameter 45mm is: A = 506,25mm2 . π = 1590,43mm2d

User Avatar

Wiki User

14y ago

Still curious? Ask our experts.

Chat with our AI personalities

ProfessorProfessor
I will give you the most educated answer.
Chat with Professor
DevinDevin
I've poured enough drinks to know that people don't always want advice—they just want to talk.
Chat with Devin
RafaRafa
There's no fun in playing it safe. Why not try something a little unhinged?
Chat with Rafa

Add your answer:

Earn +20 pts
Q: What is the area of 45mm diameter circle?
Write your answer...
Submit
Still have questions?
magnify glass
imp