area of a field is hundred square cm and its perimeter is 40 cm find the length of the field 15 cm and 20 CM 25 CM 10 cm
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In chemistry and physics, a nucleon is either a proton or a neutron, considered in its role as a component of an atomic nucleus. The number of nucleons in a nucleus defines an isotope's mass number (nucleon number). Until the 1960s, nucleons were thought to be elementary particles, not made up of smaller parts.
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