In the US, the most common size is 8 in Ã 8 in Ã 16 in (20 cm Ã 20 cm Ã 41 cm); the actual size is usually about 3/8 in (1 cm) smaller to allow for mortar joints. Cinder blocks differ from concrete blocks in their aggregate content.
Geography of Seychelles. The Seychelles is a small island nation located in the Indian Ocean northeast of Madagascar and about 1,600 km (994 mi) east of Kenya. Seychelles lies between approximately 4ÂºS and 10ÂºS and 46ÂºE and 54ÂºE.
Country Profile. Some scholars claim that the uninhabited islands of Seychelles were sighted by Vasco de Gama in 1502, however recorded landings did not occur until 1609. In 1756 France made a formal claim to the islands. The islands were named after Jean Moreau de SÃ©chelles, the Minister of Finance under Louis XV, King of France.