There is probability of 7/8 of not getting yellow.
It is said the blue card is a rectangle, so you don’t have to minus the inside rectangle. :)
Answer:
The area of the rectangle is 0.0875 sq ft.
Step-by-step explanation:
Given that,
The length of the rectangle, L = 0.35 feet
The breadth of the rectangle, B = 1/4 feet
We need to find the area of the rectangle. The formula for the area of a rectangle is given by :
A = LB
Put all the values,

So, the area of the rectangle is 0.0875 sq feet.
He has 12 marbles.
There you go