Answer:
8
Explanation:
Assuming the height is also 4 since you need that the answer is 8.
You need the height to solve this
But let me show you how to solve it with the height if you have it:
take the base (4) and multiply it with the height (I DONT it), then divide that by 2.
SOOO the base is 4 right AND IF the height was also 4 then: 4 times 4 is 16 and 16 divided by 2 is 8 which would be the answer
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