Find Area by Composing and Decomposing
Middle School Math · Flashcards · Application
MIDDLE SCHOOL MATH · FLASHCARDS
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QUESTION
What is the area of a rhombus with diagonals
d
1
=
10
d_1=10
d
1
=
10
and
d
2
=
6
d_2=6
d
2
=
6
units?
QUESTION
What is the area of an
L
L
L
-shape made from a
10
×
8
10\times 8
10
×
8
rectangle with a
4
×
3
4\times 3
4
×
3
corner removed?
QUESTION
A floor section is a trapezoid with bases
8
m
8\text{ m}
8
m
and
12
m
12\text{ m}
12
m
and height
5
m
5\text{ m}
5
m
. What area is covered?
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ANSWER
50
m
2
50\text{ m}^2
50
m
2
. Trapezoid:
1
2
(
8
+
12
)
×
5
=
50
\frac{1}{2}(8+12) \times 5 = 50
2
1
(
8
+
12
)
×
5
=
50
.
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