1.

An umbrella is made by stiching 12 triangular pieces of cloth of two different coloured as shown in given figure. Each piece measuring 40 cm, 40 cm and 18 cm. How much cloth of each colour is required for the umbrella?

A. \[2104.56\text{ }c{{m}^{2}},\text{ }2104.56\text{ }c{{m}^{2}}\]
B.        \[4209.22\text{ }c{{m}^{2}},\,2104.56\text{ }c{{m}^{2}}\]
C.        \[1204.61\text{ }c{{m}^{2}},\text{ }1204.61\text{ }c{{m}^{2}}\]
D.        \[2014.61\text{ }c{{m}^{2}},1204.61\text{ }c{{m}^{2}}\]
Answer» B.        \[4209.22\text{ }c{{m}^{2}},\,2104.56\text{ }c{{m}^{2}}\]


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