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Romashka-Z-Leto [24]
3 years ago
7

Find MO and PR .......................

Mathematics
1 answer:
Ket [755]3 years ago
6 0

MO = 12 and PR = 3

Solution:

Given \triangle M N O \sim \Delta P Q R.

Perimeter of ΔMNO = 48

Perimeter of ΔPQR = 12

MO = 12x and PR = x + 2

<em>If two triangles are similar, then the ratio of corresponding sides is equal to the ratio of perimeter of the triangles. </em>

$\Rightarrow \frac{\text { Perimeter of } \triangle M N O}{\text { Perimeter of } \triangle P Q R}=\frac{M O}{P R}

$\Rightarrow \frac{48}{12}=\frac{12 x}{x+2}

Do cross multiplication.

\Rightarrow 48(x+2)=12(12 x)

\Rightarrow 48 x+96=144 x

Subtract 48x from both sides.

\Rightarrow 48 x+96-48 x=144 x-48 x

\Rightarrow 96=96 x

Divide by 96 on both sides, we get

⇒ 1 = x

⇒ x = 1

Substitute x = 1 in MO an PR.

MO = 12(1) = 12

PR = 1 + 2 = 3

Therefore MO = 12 and PR = 3.

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