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Flauer [41]
3 years ago
12

Help me please. Very much appreciated​

Mathematics
1 answer:
olya-2409 [2.1K]3 years ago
4 0

Answer:

63mm

Step-by-step explanation:

7mm+8mm=15.

15×15=225

12×12=144(area equals base times height) add 225-144=81(here we are using the Pythagoras theory) so you search for the square root of 81 which is 9 meaning the height is 9. since we say area is 1/2base times height we should take 1/2 ×9×12=63.if the answer doesn't match with the answer in your book please tell me right away so that I can try another method thank you

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\boxed{\text{TRUE}}

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