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1 year ago

1)Karen was in a trivia contest in got 38 of the 40 questions correct .what percent of the question is she get wrong?

Mathematics

1 answer:

julia-pushkina [17]1 year ago

4 0

To find the percent of the question she got wrong, we have to divide 2 by 40, because she only missed 2.

$\frac{2}{40}=\frac{1}{20}=0.05$ <h2>So, she got wrong 5% of the question only.</h2>

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Step-by-step explanation:

The given is,

Volume of aluminium available is 1000 cubic centimeters

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Step:1

Formula for volume of right square pyramid,

$Volume, V = a^{2}\frac{h}{3}$ .....................................(1)

Where, a - Base edge value

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From given,

a = 10 cm

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Equation (1) becomes,

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Compare with the volume of available aluminium and volume of right square pyramid,

$Volume of available aluminium > Volume of right square pyramid$

$1000 cm^{3} > 433.33 cm^{3}$

So, the given volume of aluminium is enough to make right square pyramid shaped trophy.

Result:

The 1000 cubic centimeters of aluminium is enough for aluminium a trophy that will be in the shape of a right square pyramid and has a base edge of 10 cm and a slant height of 13 cm.

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