Mode questions class 9 for exam
Answers
Answer:
a) Two chords A and CD of a circle of lengths M cm and on respectively are parallel to each other and are on the opposite sides of its centre. if radius of the circle is 5 cm, then find the distance between AB and CD.
9) Difference between the outer lateral surface area and inner lateral surface area of a cylindrical metalic pipe 28 cm lang is 176 sq cm . find the outer and inner radii of the pipe, if the pipe is made of 352 cm³ of metai.
Step-by-step explanation:
7) In the given figure. ABCD is a parallelogram. P is any point in its interior. Prove that : ar (AAPD) + ar (ABPC) = ar (AAPB) + ar (ACPD)
1. A body travels along a circular path of radius 70 m. After travelling half a revolution in 20 s, find the (i) average velocity, (ii) average speed.
Construct a triangle ABC in which BC=7cm, ∠B=45° & AB+AC=13cm.
a) Two chords A and CD of a circle of lengths M cm and on respectively are parallel to each other and are on the opposite sides of its centre. if radius of the circle is 5 cm, then find the distance between AB and CD.
5) A bag contains fifteen cards bearing number 11, 12, 13, 14, probability that it bears (i) a prime number. 25. A card is chosen from the bag. Find the
i) a number divisible by 2.
Step-by-step explanation:
(3x+2y)²
using identity (a+b)²=a²+b²+2ab
= (3x)²+(2y)²+2×(3x)×(2y)
=9x²+4y²+12xy is the answer