Answer:
área is 15 perimeter is B
9.9714 x 10^-1
That would be in scientific notation
1.BD=AC
AC^2=(9^2)+(6^2)-2(9)(6)COS115
AC^2=117-108COS115
AC=√71.358
AC=8.447//
The answer is 3. You divide the numbers in the bigger triangle by the numbers on the smaller one to find the scale factor
B. The number in both places is 7. It’s 700 x 10 = 7000