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Category Archives: Class 8

Question 1. Draw a Rough diagram to illustrate the Following. (i) Open curve (ii) Closed curve Solution: i) Open curve: A curve in which the… Read More
Question 1. There are two cuboidal boxes as shown in the adjoining figure. Which box requires the lesser amount of material to make?  Solution: (a)… Read More
Question: Using the square root table find the square roots of the following Note: You may access the table of squares and square roots here. … Read More
Chapter 7 Factorization – Exercise 7.5 | Set 1 Factorize each of the following expressions: Question 24. 50/x2 – 2x2/81 Solution: 50/x2 – 2x2/81 = 2(25/x2… Read More
Factorize each of the following expressions: Question 1. 16x2 – 25y2 Solution: 16x2 – 25y2  = (4x)2 – (5y)2  = (4x – 5y)(4x + 5y)… Read More
Question 1: Which of the following are in inverse proportion? (i) The number of workers on a job and the time to complete the job.… Read More
Question 1: Can a polyhedron have for its faces (i) 3 triangles? (ii) 4 triangles? (iii) a square and four triangles? Solution: (i) 3 triangles:… Read More
Question 1. Find the cubes of:(i) -11(ii) -12(iii) -21 Solution: i) Cube of -11 = (-11)3  = -11 × -11 × -11 = -1331 ii)… Read More
Factorize each of the following: Question 1. 6x(2x – y) + 7y(2x – y) Solution:  As we know that (2x – y) is a common… Read More
Question 1. Find (GCF/HCF) of 2x2  and 12x2 Solution:  First Prime Factorize each monomial, then find common among them. Here, 2x2 = 2 * x… Read More
Question 1. The shape of the top surface of a table is a trapezium. Find its area if its parallel sides are 1 m and… Read More
Question 1. A square and a rectangular field with measurements as given in the figure have the same perimeter. Which field has a larger area?… Read More
Question 1. Identify the terms, their coefficients for each of the following expressions: (i) 7x2yz – 5xy (ii) x2 + x + 1 (iii) 3x2y2… Read More
Question 1: The following graph shows the temperature of a patient in a hospital, recorded every hour. (i) What was the patient’s temperature at 1… Read More