The height of a triangle is decreased by 25% and its base increased by 45%. Its area will
Choose the correct choice from the following answers:
A) decrease by 12.5%
B) increase by 8.75%
C) decrease by 25%
D) Increase by 25%
E) None of these
Explanation :   Let the initial height be 100 and the base be 200 units.   âˆ´ Area = 1/2 x 100 x 200 = 1000sq units   Now, height = 75 units and base = 290 units   âˆ´ New area = 1/2 x 75 x 290 = 10875   âˆ´ Area is increased by (10875 - 10000)/10000 x 10   = 8.75%   Answer : Option increase by 8.75%
<result>B</result>
The height of a triangle is decreased by 25% and its base increased by 45%. Its area will