31. 12 m
15 m
9.4 m
x
222
1215 x
so x equals…
x
21215
2
1
32. 12 m
15 m
9.4 m
x
222
1215 x
xsquare root…
21215
2
1
33. 12 m
15 m
9.4 m
x
222
1215 x
xof the whole thing
21215
2
1
34. 12 m
15 m
9.4 m
x
222
1215 x
22
1215 xof the whole thing
21215
2
1
35. 12 m
15 m
9.4 m
x
222
1215 x
Because the opposite
of squared…
22
1215 x
21215
2
1
36. 12 m
15 m
9.4 m
x
222
1215 x
22
1215 xis square root
21215
2
1
37. 12 m
15 m
9.4 m
x
222
1215 x
Putting this in the
calculator gives…
22
1215 x
21215
2
1
38. 12 m
15 m
9.4 m
x
222
1215 x
Putting this in the
calculator gives…
22
1215 x
2.19x
21215
2
1
39. 12 m
15 m
9.4 m
222
1215 x
So the unknown length
is 19.2 m
22
1215 x
2.19x
21215
2
1 19.2 m
40. 12 m
15 m
9.4 m
19.2 m
222
1215 x
22
1215 x
2.19x
Now let’s find the
Area of the Left Side
21215
2
1
41. 12 m
15 m
9.4 m
19.2 m
222
1215 x
22
1215 x
2.19x
Now let’s find the
Area of the Left Side
21215
2
1
42. 12 m
15 m
9.4 m
19.2 m
222
1215 x
22
1215 x
2.19x
2.194.9
21215
2
1
Now let’s find the
Area of the Left Side
43. 12 m
15 m
9.4 m
19.2 m
222
1215 x
22
1215 x
2.19x
2.194.9
Now find the Area of
the Right Side
21215
2
1
44. 12 m
15 m
9.4 m
19.2 m
222
1215 x
22
1215 x
2.19x
2.194.9
21215
2
1
Add that on
45. 12 m
15 m
9.4 m
19.2 m
222
1215 x
22
1215 x
2.19x
So the Area of the
Right Side is
2.194.9
21215
2
1
46. 12 m
15 m
9.4 m
19.2 m
222
1215 x
22
1215 x
2.19x
12
2.194.9
21215
2
1
So the Area of the
Right Side is
47. 12 m
15 m
9.4 m
19.2 m
222
1215 x
22
1215 x
2.19x
So the Area of the
Right Side is
12
2.194.9
21215
2
1
48. 12 m
15 m
9.4 m
19.2 m
222
1215 x
22
1215 x
2.19x
If it’s 9.4 m there
12
2.194.9
21215
2
1
49. 12 m
15 m
9.4 m
19.2 m
222
1215 x
22
1215 x
2.19x
12
9.4 m
2.194.9
21215
2
1
It’s 9.4 m there as
well
50. 12 m
15 m
9.4 m
19.2 m
222
1215 x
22
1215 x
2.19x
4.912
9.4 m
2.194.9
21215
2
1
It’s 9.4 m there as
well
51. 12 m
15 m
9.4 m
19.2 m
222
1215 x
22
1215 x
2.19x
4.912
9.4 m
And finally, find the
Bottom Area
2.194.9
21215
2
1
52. 12 m
15 m
9.4 m
19.2 m
222
1215 x
22
1215 x
2.19x
4.912
9.4 m
2.194.9
21215
2
1
Add that on
53. 12 m
15 m
9.4 m
19.2 m
222
1215 x
22
1215 x
2.19x
9.4 m
Bottom Area
4.912
2.194.9
21215
2
1
54. 12 m
15 m
9.4 m
19.2 m
222
1215 x
22
1215 x
2.19x
9.4 m
154.9
4.912
2.194.9
21215
2
1
Bottom Area
55. 12 m
15 m
9.4 m
19.2 m
222
1215 x
22
1215 x
2.19x
9.4 m
154.9
4.912
2.194.9
21215
2
1
Putting this altogether in
the calculator gives…
56. 12 m
15 m
9.4 m
19.2 m
222
1215 x
22
1215 x
2.19x
9.4 m
2
3.614154.9 m
4.912
2.194.9
21215
2
1
Putting this altogether in
the calculator gives…
Our Final Answer!