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Matemática">
Figura quadrado dentro de um coraçao 2 lds do quadrado q e 5
URCA/CE (2009.1) Uma piscina de dois
metros de profundidade foi construída usandose
na base um quadrado e duas
semicircunferências, como na figura abaixo.
Sabe-se que a piscina está cheia de água e que
para clorá-la são necessários 2 gramas de cloro
por metro cúbico. Calcule a quantidade
aproximada de cloro necessário para que a
piscina fique propícia ao uso.
a)
100
gramas
b)
99,25
gramas
c)
179,25
gramas
d)
168,5
gramas
e)
178,5
gramas
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