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12.7 Similar Solids
HW pg. 850 #422 evens 1
April 21, 2014
Bellwork 1. If the earth has a diameter of 12,756.3 km, what is the volume of the western hemisphere?
2. If the surface area of a sphere is about 1,017.876 cm 2, what is the radius of the sphere?
3. A beach ball has a radius of 20 inches. If the white sections were removed from the beach ball, what would the remaining volume be? (assume all sections are equal in size)
5.43 X 1011
9 = r
22,340.2 = V
12.7 Similar Solids
HW pg. 850 #422 evens 2
April 21, 2014
12.7 Similar SolidsDef: 2 same type solids w/ = ratios (scale factor)
12.7 Similar Solids
HW pg. 850 #422 evens 3
April 21, 2014
Similar Solids Theorem: If 2 similar solids have a scale factor of a:b, thencorresponding areas have ratio of a2:b2 and corresponding volumes have ratio of a3:b3.
12.7 Similar Solids
HW pg. 850 #422 evens 4
April 21, 2014
12.7 Similar Solids
HW pg. 850 #422 evens 5
April 21, 2014
12.7 HW pg. 850 #422 evens