Find the area of the shaded region: shaded circle diameter=14 cm, rectangle inside base=9 cm, height=3 cm

Pictuere is missing so i created picture myself as per given description.

It seems that rectangle is inside the circle.

Area between circle and rectangle is shaded as shown in figure.

Given that diameter of the circle = 14 cm

then radius of the circle = 14/2 = 7 cm

Area of the circle is given by

square cm

Given that base of rectangle = 9 cm

Given that height of rectangle = 3 cm

Then area of the rectangle = length * width = base * height = 9*3 = 27 square cm.

Now area of the shaded region is given by

Shaded Area = (Area of circle) - (Area of rectangle)

Shaded Area = 154 - 27 = 127 square cm

Hence final answer is 127 square cm.

answer: a video game has three difficulty levels: easy, medium, and expert. the game's scoring works in such a way that a player has to score a fixed number of points to advance to the next level, and then the scoring starts over. the total score needed to clear all three difficulty levels is 7,500. two times the number of points needed to clear the easy level is 500 more than the number of points needed to clear the medium level. twice the number of points needed to clear the medium difficulty level is 1,500 more than the number of points needed to clear the expert level. if x, y, and z represent the easy, medium, and expert levels, respectively, and a is the coefficient matrix of the system of equations modeling this situation, identify the inverse matrix, a-1, and the solution matrix, x, of the system of equations.

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