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3 years ago

Share 4000 in a ratio 3:4:1

Mathematics

2 answers:

muminat3 years ago

7 0

Answer:

3/8 x 4000 = 1500

4/8 x 4000 = 2000

1/8 x 4000 =500

taurus [48]3 years ago

6 0

Answer:

1500 : 2000 : 500

Step-by-step explanation:

3 + 4 + 1 = 8

4000 ÷ 8 = 500

⇒ 3 x 500 : 4 x 500 : 1 x 500

⇒ 1500 : 2000 : 500

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3 years ago

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3 years ago

The sum of the two areas of two circles is the 80x square meters. Find the length of a radius of each circle of them is twice as

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Answer:

$r = 4m$ --- small circle

$R =8m$ --- big circle

Step-by-step explanation:

Given

$Area = 80\pi\ m^2$ -- sum of areas

$R = 2r$

Required

The radius of the larger circle

Area is calculated as;

$Area = \pi r^2$

For the smaller circle, we have:

$A_1 = \pi r^2$

For the big, we have

$A_2 = \pi R^2$

The sum of both is:

$Area = A_1 + A_2$

$Area = \pi r^2 + \pi R^2$

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Factorize

$80\pi = \pi[ r^2 + 4r^2]$

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$80 = 5r^2$

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Take square roots of both sides

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3 0

3 years ago

Share 4000 in a ratio 3:4:1​

Share 4000 in a ratio 3:4:1