What are the formulas to keep in mind, for grade 7?
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Answer:
Area of a Square = Side2
Perimeter of a Square = 4 × Side
Area of Rectangle = Length × Breadth
Perimeter of a Rectangle = 2 × (Length + Breadth)
Area of a Parallelogram = Base × Height
Area of Triangle = 1/ 2 × Base × Height
Circumference of a circle = π d, where 'd' is the diameter of a circle and π = 22/7 or 3.14
Area of a circle = πr2
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Answer:
Area of Trangle = 1/2×h×b
Value of Pie = 22/7
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