Skip to main content
Super TutorResources
Chapter 20 of 28
Important Questions

Area and Perimeter of Plane Figures — Important Questions

ICSE · Class 9 · Mathematics

45 important questions from Area and Perimeter of Plane Figures for ICSE Class 9 Mathematics, with answers. Part of the ICSE Class 9 Mathematics syllabus.

45 questions31 flashcards14 formulas & key relations5 concepts

Interactive on Super Tutor

Studying Area and Perimeter of Plane Figures? Get the full interactive chapter.

Quizzes, flashcards, AI doubt-solver and a step-by-step study plan — built for important questions and more.

Try Super Tutor — Free

Free trial, no card needed.

A visual comparison defining perimeter as the length of the boundary and area as the measure of the surface enclosed by the boundary, using simple geometric shapes like a square and a rectangle.
Super Tutor

One of 18 illustrations for Area and Perimeter of Plane Figures in Super Tutor — alongside flashcards, concept maps and practice questions.

45 Questions·
multiple choicemultiple correcttrue false

Important Questions from Area and Perimeter of Plane Figures

1multiple correct

Which of the following formulas are correct for a triangle? (Select all correct answers)

Show answer

Area = ½ × base × height, Perimeter = sum of all three sides, Area = √[s(s-a)(s-b)(s-c)] (Heron's formula)

For triangles: Area = ½ × base × height is the basic formula. Perimeter is sum of all sides. Heron's formula gives area when all three sides are known. Option B misses the ½ factor, option E is for rectangles.

2multiple choice

Find the area of a circle with radius 14 cm. (Take π = 22/7)

Show answer

616 cm²

Area of circle = πr² = (22/7) × 14² = (22/7) × 196 = 616 cm². Option A is circumference, option C is r², option D is half the correct answer.

3true false

The area of an equilateral triangle with side 'a' is (√3/4)a².

Show answer

True

This is the standard formula for area of equilateral triangle. It can be derived using the basic area formula with height = (√3/2)a.

4multiple choice

What is the area of a parallelogram with base 15 cm and height 8 cm?

Show answer

120 cm²

Area of parallelogram = base × height = 15 × 8 = 120 cm². Option B is perimeter calculation, option C is half the area, option D is average of base and height.

+41 more questions on Area and Perimeter of Plane Figures (ICSE Class 9 Mathematics)

Practise All

Frequently Asked Questions

What are the important topics in Area and Perimeter of Plane Figures for ICSE Class 9 Mathematics?
Key topics in Area and Perimeter of Plane Figures include Basic Ideas and Units, Area of Triangles, Circle: Circumference, Area, and Rotation. Study these first, then practise questions on each for Class 9 exams.
How many important questions are there in Area and Perimeter of Plane Figures?
Super Tutor has 45 practice questions for Area and Perimeter of Plane Figures, including multiple choice, multiple correct, true false questions. A sample with answers is on this page.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

More resources for Area and Perimeter of Plane Figures

All ICSE Class 9 Mathematics Important Questions

For serious students

Get the full Area and Perimeter of Plane Figures chapter — start free.

Quizzes, flashcards, an AI doubt solver and a study plan for ICSE Class 9 Mathematics. Free to start, no card needed.

Try Super Tutor Free
Try this chapter free