Question

What is the area of the triangle in square FEET , given that each tick mark stands for one inch?

a)0.04 ft^2
b) 0.09 ft^2
c) 7.5 ft^2
d) 15 ft^2

Answer 1

The area of a triangle is
`A_(triangle)=(1)/(2)bh`

Where
`b` is the base and
`h` is the height.

So we plug in the numbers:


`A_(triangle)=(1)/(2)*(1)/(4)*(1)/(3) = 0.04in^(2)`

Remember: the measurements are in inches (4x3) and not feet. So the real measurements are
`(4)/(12) = (1)/(3)` and
`(3)/(12) = (1)/(4)`!