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3 years ago

The lateral surface area of a cube is 400cm². Its total surface area is

Mathematics

2 answers:

OLga [1]3 years ago

8 0

Answer:

Step-by-step explanation:

Lateral surface area of cube = 4a²

4a² = 400

a² = 400÷4

a² = 100

a = √100 = √10*10

a = 10 cm

Total surface area = 6a²

= 6 * 10²

= 6* 100

= 600 cm²

Nina [5.8K]3 years ago

3 0

Answer:

Step-by-step explanation:

I believe that I did this before.

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ivanzaharov [21]

Answer:

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Step-by-step explanation:

Let x³ and y³ be any two real numbers. If the sum of their cube roots is zero, then the following must be true:

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Olenka [21]

Answer:

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Step-by-step explanation:

we have

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step 1

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step 2

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step 3

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Step-by-step explanation:

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