Question

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the area of trapezium of height 10 cm is 240 cm². If the length of one of its side its parallel sides is 25 cm, find the length of the other parallel side .



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Answer 1

Answer:

Area of trapezium = 1/2 x (sum of

parallel sides ) x Height

Area is given = 240

A/Q, 1/2x (24+36) x H = 240

1/2x 60 x H = 240

30 xH= 240

H 240/30 8

The distance between them = 8 cm

Answer 2

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Let AB (=24m ) be guy wire attached to a vertical pole BC of height 18 m. To keep the wire taut let it fixed to stake at A Then ABC is a right triangle right angled at C

AB² =AC² +BC²

so ∴24² =AC² +18²

or AC² =576−324

or AC² =252

or AC= √252

AC=6√7m

therefore the stake may be placed at a distance of 6√7 m from the base of pole

Step-by-step explanation:

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