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Geoff L · Answer 1 · 2024-08-23T19:24:03+0000

So the height is 8cm greater then the base so 12+8= 20 so then u do base x height so that’s 20 x 12 = 240 then divide by 2 bc it’s a triangle so 240/2 = 120 so 120 sq cm or 120 m2 .

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