Answer:
about 181 or 180.96
Step-by-step explanation:
π·6.4·6.332+6.42≈180.9555
The perimeter is 17 units! :D
A). They are not similar, because 6/13 is not equal to 8/20
For triangles to be similar, the ratios of sides need to be the same (shortest to shortest, middle to middle, longest to longest). The shortest sides are 6 and 13, respectively, the middle ones are 8 and 20. Because 6/13 is not equal to 8/20, the triangles are not similar.
<span>(-9ab+8a-3) - (-7ab+1) =
</span><span>-9ab + 8a - 3 + 7ab - 1 =
-2ab +8a - 4</span>
