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SubjectsMathematics
परिमाप
In Class 9 Mathematics, the topic Perimeter explains how to measure the total distance around a two-dimensional figure. Students learn to apply perimeter formulas for squares, rectangles, triangles, polygons and circular boundaries, choose suitable units, and find missing sides when enough information is given. Connected to the chapter Area and Perimeter, the topic also helps distinguish boundary length from the space enclosed by a figure, compare shapes, and solve practical problems involving fencing, borders, paths and outlines.
TOPIC PRACTICE
Up to 1 questions from this page. Select your focus, then start.
The governing concept is the perimeter of a rectangle, which is the total distance around its boundary. The formula is P = 2(length + breadth). Substituting the given measurements gives P = 2(15 + 4) = 2 × 19 = 38 cm. Option A is only length plus breadth, while option D is the area 15 × 4. Therefore, option C, 38 cm, is correct.
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