473,000 u round up to the next thousand
Answer:
True
Step-by-step explanation:
The new area will be 320 in²
<em><u>Explanation</u></em>
Lin has a drawing with an area of 20 in² and she increases all sides by a scale factor of 4.
<u>The general rule</u> we need to use here.......
"<em>If the lengths of the sides in a shape are all increased by a scale factor of
, then the area will be increased by a scale factor of
"</em>
Here the sides are increased by a scale factor of 4. So, the area will be increased by a scale factor of 
Thus, the new area will be: 
Sin(angle) = opposite leg / hypotenuse (X)
sin(48) = 5 / X
X = 5 / sin(48)
X = 6.7
The answer is C.
Using Pythagoras:
12^2+5^2= 144+25=169
√169= 13