हिंदी

Diagonals PR and QS of a rhombus PQRS are 20 cm and 48 cm respectively. Find the length of side PQ.

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प्रश्न

Diagonals PR and QS of a rhombus PQRS are 20 cm and 48 cm respectively. Find the length of side PQ.

योग
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उत्तर

Diagonals of a rhombus bisect each other at right angles. 

PR = 20 cm, QS = 48 cm

⇒ `"PO" = 1/2 "PR"`

= `1/2 xx 20`

= 10 cm

Similarly, QS = 48 cm

⇒ `"QO" = 1/2 "SQ"`

= `1/2 xx 48`

= 24 cm

In ΔPOQ, applying Pythagoras theorem,

OQ2 + OP2 = PQ2

⇒ 242 + 102 = PQ2

⇒ PQ2 = 576 + 100

⇒ PQ2 = 676

⇒ PQ = 26 cm

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अध्याय 5: Quadrilaterals - Problem Set 5 [पृष्ठ ७४]

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बालभारती Mathematics 2 [English] Standard 9 Maharashtra State Board
अध्याय 5 Quadrilaterals
Problem Set 5 | Q 5 | पृष्ठ ७४

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