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motikmotik
3 years ago
12

The area of the rhombus is 540 cm2; the length of one of its diagonals is 4.5 dm. What is the distance between the point of inte

rsection of the diagonals and the side of the rhombus?
Mathematics
1 answer:
11111nata11111 [884]3 years ago
4 0

Area of rhombus = \frac{xy}{2}

where x and y are diagonals.

Given length of one diagonal is 4.5 dm

So, let x= 4.5dm

1 dm = 10 cm

4.5dm= 45cm

area = \frac{xy}{2}

so, 540 = \frac{45y}{2}

y = 24 cm

The two diagonals are x= 45cm and y = 24cm

Since diagonals bisect each other, we get 22.5cm and 12cm

Using right triangle formula

\frac{1}{r^{2} } = \frac{1}{22.5^{2}} + \frac{1}{12^{2}}

\frac{1}{r^{2} } =\frac{12^{2}+22.5^{2}}{22.5^{2}*12^{2}}

r^{2} = \frac{22.5^{2} *12^{2}}{12^{2}+22.5^{2}}

r = 10.588cm

Distance of center to the side = \frac{10.588}{2}  = 5.294 cm

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