۱۳ Q2:- Determine the centroid of shaded area the figure below (dimension in cm). x را ے و مستل ( است کره شك 3 دارد واع | 2 1 Aixi = 1,05 Aisi -1,96 2 = 136

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British Gravitational Bg System Of Units

Measuring is the comparison of a particular physical quantity with its reference value. A unit is a fixed physical quantity. The length is a physical quantity. A physical quantity is the product of a unit and the numerical value we need to compare with.