Percent & Geometry

Percent & Geometry:

1. What will be the percentage increase in the area of the cube's surface if each of the cube's edges grows by 20%?
(A) 33%        (B) 44%       (C) 55%     (D) 56%     (E) 73%

2. If the length and width of a rectangle garden plot were each increased by 20 percent, what would be the percent increase In the area of the plot?

(A) 20 %        (B) 24 %       (C) 36 %     (D) 40 %     (E) 44 %

3. If 60 % of a rectangular floor is covered by a rectangular rug that is 9 feet by 12 feet, what is the area, in square feet, of the floor?

(A)  65      (B) 108     (C) 180     (D) 270      (E) 300 

4. The annual budget of a certain college is to be shown on a circle graph . If the size of each sector of the graph is to be proportional to the amount of the budget it represents, how many degrees of the circle should be used to represent an item that is 15 percent of the budget?

(A)  15      (B) 36     (C) 54     (D) 90      (E) 150 

5. In a cylinder, if the radius is increases by 20% and height is decreases by 33  , what is the percentage change in the volume of the cylinder?

(A) 4% increase        (B) 4% Decrease          (C) 16% Increase             (D) 16% Decrease     (E) No Change