Hi im doing measurement at skool at the moment and i cant quite ork out some questions. Can someone please help!!!!
A circular portrait photograph has a diameter 18cm and is to be placed in a 20cm square frame. Determine the ratio of the area of the photograph to the area of the frame.
(portrait area)/(frame area)
=[(1/4)*pi*18^2]/[20^2]
= (pi/4)*(0.81) = ?