Question

Help from 16-19 show all work plz

Answer 1

16.  It's just area of one of the triangles multiplied by 4:
$4( \frac{1}{2} (12)(6)) = 2(12)(6) = 24(6) = 144cm^2$

17. There are 5 3*3 squares in the figure so the entire area is:
$5(3^2) = 5(9) = 45ft^2$

18. The height of the weird triangle at the bottom right is 35-24 = 11 and the base is 42-33 = 9. The width of the rectangle that remains is then 33 and the length is 35. Let's add all these areas up:
$\frac{1}{2}(9)(11) + (33*35) = 49.5+1155 = 1204.5yd^2$

19. The area of the garden is:
$35*40 = 1400ft^2$

From this we subtract the area of the tree which is just a square of side length 7 (the ? = 7):
$tree = 7^2 = 49ft^2$

The total area of garden (your answer):
$1400-49 = 1351 ft^2$

Hope this helps!