Answer:
41.24cm²
Step-by-step explanation:
See attachment for the figure
First is to find area of rectangle
Given:
Length of rectangle 'l'= 3cm
breadth of rectangle 'b'= 3cm
Area of rectangle= l x b= 3 x 3=> 9cm²
Next is to find the area of the circle
Given:
radius 'r'= 4cm
Area of circle= πr² => π4² =>50.24cm²
Required:
area of the shaded region=?
area of the shaded region= area of the circle - area of the rectangle
area of the shaded region= 50.24 -9 =>41.24cm²
Therefore, area of the shaded region is 41.24cm²
Answer:
The length of the model is 21 inches
Step-by-step explanation:
we have
The scale factor
That means
1 unit in the model represent 12 units in the actual
1 inch in the model represent 12 inches in the actual
Remember that
so
1 inch in the model represent 1 ft in the actual
The scale factor is
therefore
21 ft in the actual represent 21 inches in the model