12 gallons of water are used to completely fill 5 fish tanks. If each tank holds the same amount of water, how many gallons will
2 answers:
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Answer:14 m
Step-by-step explanation:
Dada
larga
superficie
Suponga que el ancho es w
La superficie está dada por el producto de la longitud y la anchura.
Por lo tanto, el ancho es de 14 m.
Answer:
Area = 370 m²
Cost to paint = £105
Step-by-step explanation:
Area of the wall of a cinema hall = Area of a trapezoid (1)+ Area of a rectangle (2) + Area of a trapezoid (3)
Area of a trapezoid =
where and
are the parallel sides and h is the distance between these sides.
Area of trapezoid (1) =
= 69 m²
Area of the rectangle (2) = Length × Width
= 12 × 15
= 180 m²
Area of the trapezoid (3) =
= 121 m²
Now area of the wall = 69 + 180 + 121
= 370 m²
One tin covers the area = 25 m²
Number of tins required to paint the wall =
=
= 14.8
Therefore, number of tins to be purchased = 15
Cost to paint the complete wall = 15 × £7
= £105
