2 years ago

HELP!!!!!!! images below

Mathematics

1 answer:

Umnica [9.8K]2 years ago

5 0

Step-by-step explanation:

me manda as respostas em português

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Someone pleeeeease help me

lukranit [14]

Answer:

22.4cm

Step-by-step explanation:

The formula for the diagonal is:

$d = \sqrt{l^{2} + b^{2} +h {}^{2} }$

Where:

l is the length (AB, CD)

b is the width (BC, AD)

h is the height (AE, BF, CG, DH)

We know d, l, b and we can calculate h

$25 = \sqrt{10^{2} + 8^{2} + h^{2} }$

We evaluate both sides to ² to remove the square root:

$25^{2} = 100 + 64 + h {}^{2}$

$625 = 164 + h {}^{2}$

To find the value of h we have to do the square root, as it is to the ²:

$\sqrt{625 - 124} = h$

$\sqrt{501} = h = 22.4cm$

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1 year ago

2/9 divided by 1 2/3

AveGali [126]

Answer: 2/15

Believe me I put the same thing and I got it correct.

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2 years ago

Work out the lengths of sides a and b.<br> Give your answers to 1 decimal place.

torisob [31]

Step-by-step explanation:

${a}^{2} = {8}^{2} + {5}^{2} \\ {a }^{2} = 64 + 25 \\ {a}^{2} = 89 \\ a = \sqrt{89} = 9.4 \: cm$

${17}^{2} = {12}^{2} + {b}^{2} \\ {b}^{2} = {17}^{2} - {12}^{2} \\ {b}^{2} = 289 - 144 \\ {b}^{2} = 145 \\ b = 12 \: cm$

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denis-greek [22]

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erastovalidia [21]

Answer:

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Step-by-step explanation:

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2 years ago