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anonymous
 5 years ago
The pentagonal pyramids are similar
h/H=4/7
Volume of large pyramid = ?
Volume of small pyramid = 320 cm3
anonymous
 5 years ago
The pentagonal pyramids are similar h/H=4/7 Volume of large pyramid = ? Volume of small pyramid = 320 cm3

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0use ratio and cross mutip 4/7= 320/H 4H=(7*320) 4H=2,240 H = 560 Volume of large pyramid =560 If I deserve medal then give me one.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0http://openstudy.com/groups/mathematics#/groups/mathematics/updates/4dcc90b68bbf8b0bfc8cf37a

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0i know that is hard to but if u couldn't do it then i ask my friend tomorrow

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I will try I get back to you later, I have help the boy geomertry home work now

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I will try the best OK

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0hey and here http://openstudy.com/groups/mathematics#/groups/mathematics/updates/4dcc66918bbf8b0babf3f27a

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0wait what the ratio for this??

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0the only i can do it write eqution ,can't answer number I can find EF = (DC+AB)/2 EF = (20+36)/2=28 28 = EX+XY+YF XY = 28(EX+YF) If teacher give you a number you can plug in and solve I can go any more father
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