WebChoose the correct answer from the given four options in the following questions: 1. If the radii of two concentric circles are 4 cm and 5 cm, then the length of each chord of one circle, which is tangent to the other circle, is (A) 3 cm (B) 6 cm (C) 9 cm (D) 1 cm Solution: According to the question, OA = 4cm, OB = 5cm And, OA ⊥ BC
RD Sharma Class 10 Solutions Chapter 8 Circles MCQS - Learn Insta
WebAug 29, 2024 · Best answer Given: AB and CD are two common tangents to two circles of equal radii . To Prove: AB = CD Construction: Join OA, OC, O’B and O’D Proof: Now, ∠OAB = … Web34. In the figure there are two pairs of concentric circles with centers A and B. The segment CD is a common chord for the two larger circles. The segment CD is also tangent to the two smaller circles. If radii BS = 15, BR = 9, and AQ = 13, find AP. A) 5 … difference between finishing and finishes
In Fig. 9.14, common tangents AB and CD to two circles
WebGivne AB and CD are tangents to two circle of equal radii. To prove AB =CD. Construction Join OA, OC, O’ B and O’D. Proof Now, ∠OAB= 90∘. [ Tangents at any point of a circle is … WebMar 12, 2024 · In Figure-4, AB and CD are common tangents to circles which touch each other at D. If AB = 8 cm, then find the length of CD. See answers Advertisement Killgore Answer: 4 cm Step-by-step explanation: Tangents from an external point to a circle are equal. AC = AD BC = BD Thus, AC = BC AB = AC + BC 8 = 2AC 4 = AC Since AC = CD, CD = … WebLC = 6, CD = 11, LB = 4 and AB = x. Formula used: LC × LD = LB × AL. Calculations : According to the question. LC × LD = LB × AL. 6 × (6 + 11) = 4 × (4 + x) ⇒ 4 + x = 51/2. ⇒ 4 + x = 25.5. ⇒ x = AB = 21.5. ∴ The length of AB is 21.5 cm. difference between finite and infinite verbs