Tiles are ordered in "squares" that contain about 171 tiles in each square.The Lees need 21 squares for the entire roof. How man
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<h3><u>Solution:-</u></h3>
This problem can be tackled by using distributive property of multiplication .
It states for any three numbers a,b and c
<u>Similarly</u>,
23 × 45
(21+2) ×45
21×45+2×45
945 + 90
1035
It can also be done as-
23 × 45
(25-2) ×45
25×45-2×45
1125-90
1035
Given the ellipsoid 
For the radius in the x-dirextion, y = z = 0, and we have
For the radius in the y-dirextion, x = z = 0, and we have
For the radius in the z-dirextion, x = y = 0, and we have
Thus, the radius of the ellipsoid is given by
For the radius in the x-dirextion, y = z = 0, and we have
For the radius in the y-dirextion, x = z = 0, and we have
For the radius in the z-dirextion, x = y = 0, and we have
Thus, the radius of the ellipsoid is given by