QUESTION IMAGE
Question
the dimensions of a room are given as 9.2 meters by 10.9 meters, to the nearest 10 cm. what area of carpet should be purchased to make sure it covers all the room?
area = 101 m²
area = 101.4 m²
area =
use your head! what is the
last step.
sir, close! can you try again checking for rounding errors? we can redo the calculations and only round at the
Step1: Calcular el área del cuarto
El área de un rectángulo se calcula como $A = l\times w$, donde $l = 9.2$ m y $w = 10.9$ m. Entonces $A=9.2\times10.9$.
$A = 9.2\times10.9=100.28$ $m^{2}$
Step2: Redondear al múltiplo de 10 cm más cercano
Como queremos cubrir todo el cuarto, y el área calculada es $100.28$ $m^{2}$, y los valores dados para la compra de alfombras son $101$ $m^{2}$ y $101.4$ $m^{2}$, elegimos el valor más cercano que cubra todo el cuarto. Entonces debemos elegir $101.4$ $m^{2}$.
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$101.4$ $m^{2}$