23
Oct
Class 9 | Chapter 12 | Heron’s Formula | Exercise 12.1 | Question 5
Question 5: Sides of a triangle are in the ratio of 12 : 17 : 25 and its perimeter is 540cm. Find its area. Question 4 Question 6 Prerequisite
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23
Oct
Class 9 | Chapter 12 | Heron’s Formula | Exercise 12.1 | Question 4
Question 4: Find the area of a triangle two sides of which are 18cm and 10cm and the perimeter is 42cm. Question 3 Question 5 Prerequisite
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23
Oct
Class 9 | Chapter 12 | Heron’s Formula | Exercise 12.1 | Question 3
Question 3: There is a slide in a park. One of its side walls has been painted in some colour with a message “KEEPTHE PARK GREEN AND CLEAN” (see Fig. 12.10 ). If the sides of the wall are 15…
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23
Oct
Class 9 | Chapter 12 | Heron’s Formula | Exercise 12.1 | Question 2
Question 2: The triangular side walls of a flyover have been used for advertisements. The sides of the walls are 122 m, 22 m and 120 m (see Fig. 12.9). The advertisements yield an earning of ` 5000 per m2…
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23
Oct
Class 9 | Chapter 12 | Heron’s Formula | Exercise 12.1 | Question 1
Question 1: A traffic signal board, indicating ‘SCHOOL AHEAD’, is an equilateral triangle with side ‘a’. Find the area of the signal board, using Heron’s formula. If its perimeter is 180 cm, what will be the area of the signal…
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09
Oct
Synthetic Division for Polynomials – Part 2
Synthetic division of polynomials – Part 2: In the first part we learned about dividing a polynomial with a linear polynomial. In this tutorial we are going learn how to divide a single variable polynomial with a non-linear polynomial (a…
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09
Oct
Synthetic Division for Polynomials – Part 1
Synthetic division of polynomials – Part 1: In this tutorial you will learn to divide a single variable polynomial with a linear polynomial. This is one of the easiest and shortest method of polynomial division – just in 3 lines.…
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05
Oct
Class 9 | Chapter 2 | Polynomials | Exercise 2.5 | Question 16
Question 16: What are the possible expressions for the dimensions of the cuboids whose volumes are given below? (i) Volume : 3×2 – 12x (ii) Volume : 12ky2 + 8ky – 20k Question 15 Class 9 | Home Prerequisite To…
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05
Oct
Class 9 | Chapter 2 | Polynomials | Exercise 2.5 | Question 15
Question 15: Give possible expressions for the length and breadth of each of the following rectangles, in which their areas are given: (i) Area : 25a2 – 35a + 12 (ii) Area : 35y2 + 13y –12 Question 14 Question…
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05
Oct
Class 9 | Chapter 2 | Polynomials | Exercise 2.5 | Question 14
Question 14: Without actually calculating the cubes, find the value of each of the following: (i) (–123 + (7)3 + (5)3 (ii) (28)3 + (–15)3 + (–13)3 Question 13 Question 15 Prerequisite Algebraic Identities
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