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2 years ago

A rectangular field is 300 meters long and 250 meters wide. What is the area of the field in square kilometers

Mathematics

1 answer:

lidiya [134]2 years ago

7 0

Answer:

0.075 sq km

Step-by-step explanation:

Given that there is a rectangular field with dimensions of length =300 m and width = 250 m.

We have to calculate area of this rectangle in the units of square kilometres.

Let us convert length and width into km

1000m = 1 km

Hence length = 300/1000= 0.3 km and

width = 250/1000 = 0.25 km.

ARea = length x width = 0.3 x 0.25

=0.075 square km.

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Ulleksa [173]

Answer:

Step-by-step explanation:

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3 years ago

A group of three undergraduate and five graduate students are available to fill certain student government posts. If four studen

creativ13 [48]

Answer:

$Pr = 0.4286$

Step-by-step explanation:

Given

Let

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$G \to$ Graduates

So, we have:

$U = 3; G =5$ -- Total students

$r = 4$ --- students to select

Required

$P(U =2)$

From the question, we understand that 2 undergraduates are to be selected; This means that 2 graduates are to be selected.

First, we calculate the total possible selection (using combination)

$^nC_r = \frac{n!}{(n-r)!r!}$

So, we have:

$Total = ^{U + G}C_r$

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$Total = \frac{8!}{(8-4)!4!}$

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Using a calculator, we have:

$Total = 70$

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$U = \frac{3!}{1!2!}$

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$Pr = \frac{G * U}{Total}$

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$Pr = 0.4286$

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