Question

tính DT hình tam giác có chiều cao là 45 độ dài đay là 76 

Answer 1

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Answer 2

Gọi độ dài đáy, chiều cao tam giác đó lần lượt là a, h

\(S_{\Delta}=\frac{1}{2}.a.h=\frac{1}{2}.76.45=1710\)