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Perimeter and Area

    What Have We Discussed ?

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7th class > Perimeter and Area > What Have We Discussed ?

What Have We Discussed ?

Area of a = base × height

Area of a triangle = \frac{1}{2} x area of the generated from it

= \frac{1}{2} × ×

The distance around a circular region is known as its .

Circumference of a circle = πd, where d is the diameter of a circle and π = \frac{22}{7} or 3.14 (approximately).

Area of a circle = πr2 , where r is the radius of the circle.