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3 years ago

Which number is irrational? a)9.2727… b)√2 c) 5 x √9 d) -37/71

Mathematics

1 answer:

jenyasd209 [6]3 years ago

5 0

Answer:

The answer is B.

Step-by-step explanation:

Irrational number is a number that cannot be written in a fraction-form.

In the option above,

Option A,

$9.2727 = \frac{92727}{10000}$

Option B,

$\sqrt{2} = \sqrt{2}$

Option C,

$5x \sqrt{9} \\ = 5x \times 3 \\ = 15x \\ = \frac{15x}{1}$

Option D,

$- \frac{37}{71} = - \frac{37}{71}$

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Answer:

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Step-by-step explanation:

Given:

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Side Length of A, $s_A =$ 12 inches

Height of A, $h_A =$ 8 inches

Side Length of B, $s_B =$ 48 inches

Height of B, $h_B =$ 32 inches

To find:

How many times bigger is the volume of pyramid B than pyramid A?

$V_B$ is how many times bigger than $V_A$ ?

Solution:

First of all, let us have a look at the formula for volume of a pyramid:

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