Question

What is the Area of this triangle when x=10 inches? Hint: Area= 1/2bh

Answer 1

height(h) = 7x

base(b) = 4x

Since you know the value of x, you can plug it in

h = 7(10) = 70in

b = 4(10) = 40in

$A = \frac{1}{2}bh$

$A=\frac{1}{2} (40)(70)$

$A=\frac{1}{2} (2800)$

A = 1400in²