12. Determine the area of the shaded region. 12 in 12 in

Step-by-step explanation:

We know that:

Solution:

Step-by-step explanation:

Area of shaded region = Area of square - area of sphere (4 circles)

here ,

Area of square = ( length)^2

= (12)^2

= 12*12

= 144 sq.in

also,

diametre of circle = 12/2=6 inch

Now,

area of circle = pie d

= 22/7*6

18.857 sq.inch

Area of 4 circles = 4 * area of circle

= 4 * 18.857

= 75.428 sq. inches

Area of shaded region = Area of square - area of

(4 circles)

= 144 sq.inches - 75.428 sq.inches

= 68.571 sq.inches

Therefore , the area of shaded region = 68.571 sq.inches

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