Here is a trapezium.
20 m
Jenny wants to work out the area of
the trapezium.
13...
![Mathematics](/tpl/images/cats/mat.png)
Mathematics, 07.12.2021 17:40, cearp
Here is a trapezium.
20 m
Jenny wants to work out the area of
the trapezium.
13 m
She writes:
13 m
N
12 m
area =-
ol
(20+30)(13)
+5 m
+5 m
=(10+30)(13)
= 40x13
= 520 m²
What two mistakes did Jenny make in her method?
![answer](/tpl/images/cats/otvet.png)
Answers: 3
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