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Masteriza [31]
4 years ago
10

I need the answer to number 5 ASAP

Mathematics
1 answer:
Novosadov [1.4K]4 years ago
3 0

Answer:

78.5714286 cm²

Step-by-step explanation:

The equation for the area of a circle is πr².

You can work out the radius (r) by halving the value of the diameter, which is given as 10cm.

You then square this, so 5² = 25.

Finally, multiply this by pi which is given to you as 22/7.

(22/7) x 25

3.14285714286 x 25 = 78.5714285714, to be exact.

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the length, breadth and height of a cuboid are in the ratio 5:4:2 if the volume of cuboid is 5000 cm,then what will be the surfa
Sonbull [250]

Answer:

  1900 cm²

Step-by-step explanation:

We can use the given ratios and volume to find the scale factor for the dimensions. Knowing the dimensions, we can compute the surface area using the formula for a cuboid.

__

<h3>dimensions</h3>

Let k represent the scale factor. Then the actual dimensions will be 5k, 4k, and 2k. The actual volume will be ...

  V = LWH

  5000 cm³ = (5k)(4k)(2k) = 40k³

  k³ = (5000 cm³)/40 = 125 cm³

  k = ∛(125 cm³) = 5 cm

The cuboid dimensions are 5(5 cm) = 25 cm, 4(5 cm) = 20 cm, and 2(5 cm) = 10 cm.

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<h3>area</h3>

The surface area of the cuboid can be computed from ...

  A = 2(LW +H(L +W))

  A = 2((25 cm)(20 cm) +(10 cm)(25 +20 cm))

  A = 2(500 cm² +(10 cm)(45 cm)) = 2(950 cm²) = 1900 cm²

The surface area of the cuboid is 1900 cm².

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2 years ago
A rectangular tank is 100 cm long, 30 cm wide and 12 cm deep.The volume of liquid it will hold is​
Marina86 [1]

Answer:

36000cm

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3 years ago
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The median of 10,31,36,36,38,42,47,48,49,52
olga2289 [7]
So,

To find the median, arrange all the numbers from least to greatest.

10, 31, 36, 36, 38, 42, 47, 48, 49, 52

The middle two numbers are 38 and 42.  Take their average.
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4 years ago
Rectangle ABCD has vertices A(–6, –2), B(–3, –2),
Natali5045456 [20]

Answer:

A

Step-by-step explanation:

The changes in the co-ordinates are given

A = (-6,-2) = (-6,-2) + (-4,3) = (-10,1)

B = (-3,-2) =  (-3,-2) + (-4,3) = (-7,-1)

C = (-3,-6) = (-3,-6) + (-4,3) = (-7,-3)

D = (-6,-6) = (-6,-6) + (-4,3) = (-10,-3)

So, the rectangle ABCD is transformed by the co-ordinates (-4,3). Translated 4 units to the left, 3 units upwards.

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3 years ago
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