Question

ABC is a trianglr ,right angled at C.If AB=25 cm and AC=7cm.Find BC

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Answer 1

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ABC is a triangle, right angled at C. If AB = 25 cm and AC = 7cm. Find BC.

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In right triangle ABC :

(H)² = (P)²+(B)²

(AB)² = (AC)²+(BC)²

25² = 7²+(BC)²

(BC)² = 25²-7²

(BC)² = 625-49

BC = √576

BC = 24 cm

Answer 2

Diagram :-

ㅤㅤㅤㅤㅤㅤㅤㅤA

ㅤㅤㅤㅤㅤㅤㅤㅤ/|

ㅤㅤㅤㅤㅤㅤㅤ / |

ㅤㅤㅤㅤㅤㅤ /ㅤ |

ㅤㅤㅤㅤㅤ /ㅤㅤ |

ㅤㅤㅤㅤㅤ /ㅤㅤ |

ㅤㅤㅤㅤ /ㅤㅤㅤ |

ㅤㅤㅤ / ㅤㅤㅤㅤ|

ㅤㅤ ㅤ/________|

ㅤ ㅤBㅤㅤㅤㅤㅤㅤC

..Question..

ABC is a triangle , right angle at C

If , AB = 25 cm

ㅤ AC = 7 cm

..Answer..

Given ,

ㅤㅤㅤㅤ➪ AB = 25 cm

ㅤㅤㅤㅤ➪ AC = 7 cm

ㅤㅤㅤㅤ➪ L ACB = 90°

☯︎ We are to find out = BC

•°• By Pythagoras Theorem

ㅤㅤㅤ➪ AB² = AC² + BC²

ㅤㅤㅤ➪ 25² = 7² + BC²

ㅤㅤㅤ➪ 7² + BC² = 25²

ㅤㅤㅤ➪ 49 + BC² = 625

ㅤㅤㅤ➪ BC² = 625 - 49

ㅤㅤㅤ➪ BC² = 576

ㅤㅤㅤ➪ BC = √576

ㅤㅤㅤ➪ BC = 24

•°• BC = 24 cm --------------------- Ans...

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Quick knowledge :-

• the side opposite to the right angle is called the Hypotenuse

ㅤㅤㅤ꧁ ʙʀᴀɪɴʟʏ×ᴋɪᴋɪ ꧂

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