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sveta [45]
2 years ago
7

An aquarium has a base in the shape of a trapezoid. The base is 90 cm long at the front, 60 cm long at the back, and 30 cm wide

(from front to back). The height is 100 cm. What is the volume of the aquarium in litres?
Mathematics
1 answer:
Nonamiya [84]2 years ago
5 0

Answer:

Step-by-step explanation:

First calculate for the area of the trapezoid (the formula is (base + base / 2) x height):

60 cm + 90 cm = 150 cm

150 cm / 2 = 75 cm

75 cm x 30 cm = 2250 cm²

Now 1 cm² = 1 mL and 1000 mL = 1 L

2250 cm² = 2250 mL

2250 mL = 2.25 L

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vladimir2022 [97]

Answer:

(1,-12)

Step-by-step explanation:

d starts at (-5,-2) if you add 6 to -5 and minus -2 by 10 you will end up with (1,-12)

3 0
1 year ago
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If a cow has a mass of 9×102 kilograms, and a blue whale has a mass of 1.8×105 kilograms, which of these statements is true?
lana66690 [7]

Answer:

The mass of the Blue whale is 200 times the mass of the cow

Step-by-step explanation:

Given

Mass of Cow = 9 * 10² kg

Mass of Blue Whale = 1.8 * 10⁵ kg

Required

Determine the relationship between both weights

Represent the mass of the cow with C and the mass of the whale with B

C = 9 * 10^2kg

C = 9 *100kg

C = 900kg

B = 1.8 * 10^5kg

B = 1.8 * 100000kg

B = 180000kg

Divide the bigger weight by the smaller weight

\frac{B}{C} = \frac{180000kg}{900kg}

\frac{B}{C} = \frac{180000}{900}

\frac{B}{C} = {200}{}

Multiply both sides by C

C * \frac{B}{C} = {200}{} * C

B = {200}{} * C

B = 200}C

<em>From the expression above, it can be concluded that the mass of the Blue whale is 200 times the mass of the cow</em>

7 0
1 year ago
This figure shows the nose cone of a rocket used for launching satellites. The nose cone houses the satellite until the satellit
Elena-2011 [213]

see the attached figure to better understand the problem

we know that

The volume of the cone is equal to

V=\frac{1}{3} \pi r^{2} h

in this problem

r=\frac{6}{2} =3\ ft\\ \\ h=15\ ft

Substitute the values in the formula above

V=\frac{1}{3}* \pi* 3^{2}* 15\\ \\ V=45\pi \ ft^{3}

therefore

the answer is

The volume of the nose cone is 45\pi \ ft^{3}

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1 year ago
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If the length of rectangle is 8.26cm and its breadth is 5.5cm, the find the
zubka84 [21]

Answer:

Area of a rectangle= L×B

=8.26cm×5.5cm

=45.43cm square

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Ken grew 4/5 of an inch last year. sang grew3/8 of an inch . who grew more and by how much?
Licemer1 [7]
Sang grew more. and by 17/40 ( I could be wrong)
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