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gregori [183]
3 years ago
9

Calculate the area in square metres for a triangle with a base 16.6 m long and a perpendicular height of

Mathematics
1 answer:
fomenos3 years ago
6 0

\\ \tt\bull\leadsto Area=\dfrac{1}{2}Base\times Height

\\ \tt\bull\leadsto Area=\dfrac{1}{2}16.6\times 3.2

\\ \tt\bull\leadsto Area=8.3(3.2)

\\ \tt\bull\leadsto Area=26.56m^2

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Step-by-step explanation:

Finishing times of 6 participants in 200 meter dash has been given as 27, 28, 27, 25, 24, 31.

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Formula of standard deviation is

\sigma=\sqrt{\frac{\sum(x-\mu)^{2}}{n} }

where \sigma = standard deviation

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Mean of given data = \frac{27+28+27+25+24+31}{6}=27

\sum(x-\mu)^{2}=(27-27)^{2}+(28-27)^{2}+(27-27)^{2}+(25-28)^{2}+(24-27)^{2}+(31-27)^{2}

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Now \frac{\sum(x-\mu)^{2}}{n}=\frac{30}{6}=5

\sigma=\sqrt{5} = 2.236 ≈ 2.24

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