How Do Circles and Parallel Lines Interact in Geometry?

[wailingkoh]

Hi all,

Please help. I am stuck with the question below and I have no clue how to solve:

View attachment 4573

Thanks for the help.

 

[Evgeny.Makarov]

Hi, and welcome to the forum.

I hope the following picture helps.

View attachment 4575

 

[wailingkoh]

Hi
Thanks for the reply. Do I solve it by fraction. Sorry, I am very lost with this question

 

[wailingkoh]

8 multiply by 4 for 32 units square but I still won't get the full shaded and unshaded

 

[Greg]

You don't need them. "Cancelling" the dotted areas with their corresponding shaded areas leaves a dotted rectangle which is 32 cm. squared. That's the difference between the two areas.

 

[wailingkoh]

Awesome!
I was so silly.

Thanks for the help.

This forum is great