Question

in the blanks with the appropriate word from the list quaternary, sugarcane, resources, sugar beet, minerals, martese the USE by determined is 1. The level of economic prosperity activities improve the quality of all the other three activities. 3. Mineral industries use _minerals as their raw materials. 4. Presence of market is an essential factor for the growth of industries 5. Sugar is made from and Sugarcane Sugar beet

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Answer 1

$Both \: the \: moon \: and \: earth \: are \: in \: \\ the \: shape \: of \: spheres. \\ Surface\: area \: of \: a \: sphere \: of \: radius \: 'r'$

Let d1 be the diameter of the moon and d2 and be the diameter of the earth.Let r1 be the radius of the moon and r2 be the radius of the earth.

$given \: d1 = \frac{1}{4}d2 \\ = > 2r1 = \frac{1}{4} ×2r2 \\ =>r1 = \frac{1}{4}×r2 \\ Now, \: ratio \: of \: \: their \: surface \: areas \: is: \\ = s1: s2 \\ = r {1}^{2}: r {2}^{2} \\ = {1}^{2 } : {4}^{2 } \\ =1:16$

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