Question

9. The edges of two cubes are 8 cm and 4 cm respectively. Calculate the ratio of
their surface area ?



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Answer 1

Answer:

384/96

Step-by-step explanation:

this is the answer

Answer 2

$\underline\red{\bold{ANSWERE:-}}$

• Ratio = 4:1

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${\bold{\boxed{\sf{\green{GIVEN \: THAT}}}}}$

• The edges of two cubes are 8cm and 4cm

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$\underline\red{\bold{TO \: FIND}}$

• The ratio of their surface area of these cubes ?

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FORMULA

$The \: surface \: area \: of \: cube = 4 {a}^{2}$

Where,

✓ a = edge of cube

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SOLUTION

Let,

a1 is edge of first cube and a2 is edge of second cube .

so,

a1 = 8 cm.

a2 = 4 cm

• Surface area of first cube =

$A1 = 4 \times {8}^{2} = 256 \: {cm}^{2}$

• Surface area of second cube =

$A2 = 4 \times {4}^{2} = 64 \: {cm}^{2}$

Now The Ratio of their Surface area =

$\frac{A1}{A2} = \frac{256}{64} = \frac{4}{1}$

• A1 : A2 = 4:1

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$\blue{\texttt{your answer}}$

• The ratio of their Surface area= 4:1