gonitsora.comgonitsora.com/downloads/csir/csir net-June-2015...A pyramid shaped toy is made by...
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gonitsora.comgonitsora.com/downloads/csir/csir net-June-2015...A pyramid shaped toy is made by tightly placing cubic blocks of I x 1 x 1 cm3. The base of the toy is a square 4 x 4