in a circle of radius 42cm arc substance an angle of 72° at length of arc is
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arc=(angle subtended/360°)×2×pie× r
72°/360° ×2×22/7×42=52.8
72°/360° ×2×22/7×42=52.8
khushibholu:
explain this
How
total area =10.5×3=31.5
3150cm
3150 cm
hence 3150 tile of 1×1cm
in above 31.5 tiles
thanks
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a rectangle grassy plot is 110m by 65m.it has a uniform path 2.5m wide all around it on inside . area of path is
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