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77julia77 [94]
3 years ago
14

Help me please . Very much appreciated​

Mathematics
1 answer:
daser333 [38]3 years ago
4 0

Answer:

126

Step-by-step explanation:

multuply the base times the hight in which case the base is 21 and the hight is 12 then devide that answer by 2. so it should look like this 21 * 12 all over 2

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