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The figure below shows a right pyramid VABCDE. The base ABCDE is a regular pentagon. AO = 15cm and VO = 36cm.
Calculate:
(a) The area of the base correct to 2 decimal places
(b) The length AV
(c) The surface area of the pyramid correct to 2 decimal places
(d) The volume of the pyramid correct to 4 significant figures.