Mathematics, 26.05.2021 02:50, alexandraparava
OABCD is a square based pyramid of side 4 cm as shown in the diagram. The vertex D is 3 cm
directly above X, the centre of square OABC. M is the midpoint of AB.
(a) Find the length of XM
(b) Calculate the length of DM
c) Calculate the angle between the face ABD and the base OABC.
Answers: 3
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