If each side of a rectangle is increased by 50% with the length being double the width, find the ...
If each side of a rectangle is increased by 50% with the length being double the width, find the percentage change in its area?
Answer/Solution
275%
Steps/Work
area = 2a x a
New length = 250a / 100 = 5a /2
New width = 150a / 100 = 3a /2
New area =(5a x 3a) / (2 x 2) = (15a²/4)
increased area== (15a²/4) - a²
Increase %= [(11a²/4 ) x (1/a² ) x 100]% = 275%
answer :E
New length = 250a / 100 = 5a /2
New width = 150a / 100 = 3a /2
New area =(5a x 3a) / (2 x 2) = (15a²/4)
increased area== (15a²/4) - a²
Increase %= [(11a²/4 ) x (1/a² ) x 100]% = 275%
answer :E