ICSE /Class 7
Maths MCQ Based On Revision of perimeter and idea of circumference of circle
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ICSE Class 7 Maths Revision of perimeter and idea of circumference of circle
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Use the formula of perimeter of rectangle
Remember the formula for circumference.
\\(r=\\frac{C}{2\\pi }, A= \\pi r^{2}\\)
\\(AREA = \\frac{1}{2}\\times base\\times altitude\\)
\\(n\\times \\)area of each congruent= area of rectangle, here n=8
Find half circumference first
\\(\\pi r^{2}= l\\times b\\)
Use the formula for the circumference of the circle.
Area of cemented path = Area of outer rectangle – Area of swimming pool
\\(area(QPON)=ON(base)\\times altitude,\\) where altitude= height of \\(\\triangle QMN\\)
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