Question

Efetue as adições a seguir dando a resposta em metros quadrados: a) 4,12 cm 2 + 0,0752 dm 2 +17,95 dm2 b) 43,85 m2 +48,75 dm2+87.900 mm2=

Answer 1

$Ola'~~ Lalelilulu \\ \\ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~|\xrightarrow {~~~~~X~10\²~~~~~}{} \\ \boxed{km\²~|~hm\²~|~dam\²~|~m\²~|~dm\²~|~cm\²~|~mm\²~} \\~~~~~~~~~~~ ~~~~~~~~~~ ~~~~~~~~~~~ \xleftarrow{~~~~~~:10\²~~~~~~~}| \\ \\ pela~dereita~multiplica~pela~esquerda~divide \\ a) \\ 4,12cm\²+0,0752dm\²+17,95dm\² \\ 4,12\not cm\². \frac{ 1m^{2} }{ 10^{4}\not cm\² } +0,0752\not dm\². \frac{ 1m^{2} }{ 10^{2}\not dm\² } +17,95\not dm\². \frac{ 1m^{2} }{ 10^{2}\not dm\² }$

$\frac{4,12 m^{2} }{10 ^{4} } + \frac{0,0752 m^{2} }{ 10^{2} } + \frac{ 17,95m^{2} }{ 10^{2} } \\ \\ \frac{4,12 m^{2} }{ 10^{4} } + \frac{18,0252 m^{2} }{ 10^{2} } \\ \\ 0,000412 m^{2} +0,180252 m^{2} \\ \\ \boxed{\boxed{0,180664 m^{2} }}$

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$b) \\ Igual~pasaremos~a~(m\²) \\ 43,85 m^{2} +48,75dm\²+87,900mm\² \\ 43,85m\²+48,75\not dm\². \frac{ 1m^{2} }{ 10^{2 } \not dm^{2} } +87,900\not mm\². \frac{ 1m^{2} }{ 10^{6}\not mm^{2} } \\ 43,85m\²+ \frac{48,75 m^{2} }{ 10^{2} } + \frac{87,900 m^{2} }{ 10^{6} } \\ 43,85m\²+0,4875m\²+0,0000879m\² \\ \boxed{\boxed{44,3375879m\²}}$

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