iiwaffle
iiwaffle
03-04-2017
Mathematics
contestada
I need help for number 1 through 3
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Goalinetsky
Goalinetsky
03-04-2017
Area of a Triangle = [tex] \frac{bh}{2} [/tex]
1: A = [tex] \frac{12x18}{2} [/tex] = 108cm²
2: A = 10·10 + 2([tex] \frac{20x10}{2} [/tex]) = 100 + 200 = 300mm²
3: A = [tex] \frac{1.4x2.1}{2} [/tex] = 1.47m²
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