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ZhangYan
 2 years ago
Ingrid is making a quilt using squares that measure 5 in. on a side. What is the length of a diagonal of one of the quilt squares? Round to the nearest tenth.
8.7 in.
7.1 in.
3.5 in.
14.2 in.
ZhangYan
 2 years ago
Ingrid is making a quilt using squares that measure 5 in. on a side. What is the length of a diagonal of one of the quilt squares? Round to the nearest tenth. 8.7 in. 7.1 in. 3.5 in. 14.2 in.

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sasogeek
 2 years ago
Best ResponseYou've already chosen the best response.2have you done Pythagoras' theorem?

sasogeek
 2 years ago
Best ResponseYou've already chosen the best response.2ok so we know that the quilt is being made using squares... which measure 5in on each side... basically one square will look like this dw:1336502631039:dw do you agree?

sasogeek
 2 years ago
Best ResponseYou've already chosen the best response.2ok good, after drawing a diagonal, we'll have this dw:1336502741454:dw we'll have two right angled triangles... right?

sasogeek
 2 years ago
Best ResponseYou've already chosen the best response.2ok good, according to pythagoras, if we have a right angled triangle, this formula holds \(\huge a^2=b^2+c^2 \) dw:1336503014472:dw my "C" is little but u can see it :) are we okay so far?

sasogeek
 2 years ago
Best ResponseYou've already chosen the best response.2ok good, we are going to apply this to the question. we know that each side of the square is 5in, hence, dw:1336503197307:dw now looking at this, we know what "b" and "c" are, they're both 5, so we have to solve for "a" ....

sasogeek
 2 years ago
Best ResponseYou've already chosen the best response.2what is a? dw:1336503379725:dw

ZhangYan
 2 years ago
Best ResponseYou've already chosen the best response.2thanks for your help this informations is really helps to me :)
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