April 30th, 2014, 03:15 AM  #1 
Senior Member Joined: Nov 2013 Posts: 434 Thanks: 8  100%
Triangle area of 100 cm^2 Increased the length of the base 20% Increased the height of the triangle 10% Find space after the increase 
April 30th, 2014, 03:43 AM  #2 
Senior Member Joined: Apr 2014 From: Greater London, England, UK Posts: 320 Thanks: 156 Math Focus: Abstract algebra 
$\displaystyle \frac12(1.2b)(1.1h) \, = \, (1.2)(1.1)\left(\frac12bh\right) \, = \, 132\ \mathrm{cm^2}$
