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Find the area of the shaded portion in each : 7cm (ii) 4.5 m 2.5 m 7 cm |
| Answer» <html><body><p><strong>Answer:</strong></p><p>Perimeter and Area- This chapter gives all the details about the perimeter and area of plane figures. <a href="https://interviewquestions.tuteehub.com/tag/firstly-462152" style="font-weight:bold;" target="_blank" title="Click to know more about FIRSTLY">FIRSTLY</a> the chapter discusses squares and rectangles. </p><p>Perimeter is the distance around a closed figure whereas area is the part of the plane occupied by the closed figure. </p><p>The perimeter of the following geometrical shapes are discussed in the first section:</p><p>Square</p><p>Perimeter of a square = 4 × side</p><p>Rectangle</p><p>Perimeter of a rectangle = 2 × (length + breadth)</p><p>The section is divided into two sub-<a href="https://interviewquestions.tuteehub.com/tag/parts-1148278" style="font-weight:bold;" target="_blank" title="Click to know more about PARTS">PARTS</a>:</p><p>1. Triangles as parts of rectangles</p><p>2. Generalising for other congruent parts of rectangles</p><p>Before moving onto exercise 11.2, the topics Area of triangle and parallelogram are discussed. </p><p>Area of a square = side × side</p><p>Area of a rectangle = length × breadth</p><p>Area of a parallelogram = base × height</p><p>Area of a triangle =1/2 × base × height </p><p>In the other half of the chapter, circles are explained. The topic is explained in two parts:</p><p>1. Circumference of Circle</p><p>The distance around a circular region is known as its circumference. </p><p>Circumference of a circle = πd</p><p>2. Area of circle</p><p>Area of circle is given by πr2</p><p></p><p>The last part of the chapter is about the conversion of units and <a href="https://interviewquestions.tuteehub.com/tag/application-25616" style="font-weight:bold;" target="_blank" title="Click to know more about APPLICATION">APPLICATION</a> of the formulas. </p><p>Based on the conversion of units for lengths, studied in the chapter, the units of areas can also be converted:</p><p>1 cm2 = 100 mm2 </p><p>1 m2 = <a href="https://interviewquestions.tuteehub.com/tag/10000-265645" style="font-weight:bold;" target="_blank" title="Click to know more about 10000">10000</a> cm2</p><p>1 hectare = 10000 m2</p><p>The various formulas and the conversions of units are revised and thus their application in real life scenarios are studied in this topic. These questions require practice and thus <a href="https://interviewquestions.tuteehub.com/tag/one-585732" style="font-weight:bold;" target="_blank" title="Click to know more about ONE">ONE</a> needs to try and solve as many questions as possible in this chapter.</p><p>Students will be briefed about important points of the chapter perimeter and area in the end. </p><p><strong>Step-by-step explanation:</strong></p><p>please mark me as brainiest</p></body></html> | |