Value Based Questions- Heron’s Formula Class 9 Notes | EduRev

Class 9 Mathematics by Full Circle

Created by: Full Circle

Class 9 : Value Based Questions- Heron’s Formula Class 9 Notes | EduRev

The document Value Based Questions- Heron’s Formula Class 9 Notes | EduRev is a part of the Class 9 Course Class 9 Mathematics by Full Circle.
All you need of Class 9 at this link: Class 9

Question 1. Sarika participated in a drawing competition. She is required to make a design on a rectangular sheet of dimensions 50 cm × 70 cm. In the design she made 8 triangles, each of sides 26 cm, 17 cm and 25 cm as shown in the figure.

Value Based Questions- Heron’s Formula Class 9 Notes | EduRev

(i) Find the total area of the design.
 (ii) Find the remaining area of the sheet.
 (iii) By drawing a design in a competition, which value is depicted by Sarika?
 Solution.
(i) Sides of a triangle are: a = 26 cm, b = 17 cm and c = 25 cm

Value Based Questions- Heron’s Formula Class 9 Notes | EduRev

Using, Hero’s formula,

Value Based Questions- Heron’s Formula Class 9 Notes | EduRev

Value Based Questions- Heron’s Formula Class 9 Notes | EduRev

= 2 × 17 × 2 × 3 cm= 204 cm2
∵ The design is having 8 equal (congruent) triangles.
∴ Total area of the design = 8 × (Area of one triangle) = 8 × 204 cm2
= 1632 cm2

(ii) Total area of the sheet =70 cm × 50 cm = 3500 cm2
∴ Remaining area of the sheet = (3500 – 1632) cm2
= 1868 cm2
(iii) Creativity.

Share with a friend

Complete Syllabus of Class 9

Dynamic Test

Content Category

Related Searches

Free

,

Extra Questions

,

video lectures

,

practice quizzes

,

shortcuts and tricks

,

MCQs

,

Summary

,

mock tests for examination

,

Value Based Questions- Heron’s Formula Class 9 Notes | EduRev

,

past year papers

,

Objective type Questions

,

ppt

,

pdf

,

Sample Paper

,

Exam

,

Semester Notes

,

study material

,

Previous Year Questions with Solutions

,

Viva Questions

,

Value Based Questions- Heron’s Formula Class 9 Notes | EduRev

,

Important questions

,

Value Based Questions- Heron’s Formula Class 9 Notes | EduRev

;