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Gabylovesyou
 2 years ago
FInd the perimeter of the image
Gabylovesyou
 2 years ago
FInd the perimeter of the image

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Gabylovesyou
 2 years ago
Best ResponseYou've already chosen the best response.137 units 38 units 39 units 40 units

ganeshie8
 2 years ago
Best ResponseYou've already chosen the best response.2to find the perimeter of given shape, you need to find out sides first

ganeshie8
 2 years ago
Best ResponseYou've already chosen the best response.2perimeter = sum of all sides

ganeshie8
 2 years ago
Best ResponseYou've already chosen the best response.2know how to find the length of sides on coordinate plane ?

Gabylovesyou
 2 years ago
Best ResponseYou've already chosen the best response.1distance formula ?

ganeshie8
 2 years ago
Best ResponseYou've already chosen the best response.2yes, but for that u need to figure out coordinates of points and plug them in the formula... which is a pain... and u need to do it for 5 times... since u have 5 sides

ganeshie8
 2 years ago
Best ResponseYou've already chosen the best response.2there is a simpler way to do this, which uses the distance formula in disguise...

Gabylovesyou
 2 years ago
Best ResponseYou've already chosen the best response.1whats the simpler way ?

ganeshie8
 2 years ago
Best ResponseYou've already chosen the best response.2use pythagorean theorem : that red side = \(\sqrt{2^2+6^2} = \sqrt{40}\)

ganeshie8
 2 years ago
Best ResponseYou've already chosen the best response.2this is exact same as distance formula, but this is felt simple because, you're not plugging in the coordinates... instead you're just counting the number of grids...

ganeshie8
 2 years ago
Best ResponseYou've already chosen the best response.2use whichever u feel is easy...

Gabylovesyou
 2 years ago
Best ResponseYou've already chosen the best response.1how did u solve that ^ ... like how did u get 40 ?

ganeshie8
 2 years ago
Best ResponseYou've already chosen the best response.2the goal is to find the length of all sides and add up

ganeshie8
 2 years ago
Best ResponseYou've already chosen the best response.2did u get how I got : red side = \(\sqrt{2^2+6^2} \)

Gabylovesyou
 2 years ago
Best ResponseYou've already chosen the best response.1i know how u got the 2 and the 6... just not the 40 ...

ganeshie8
 2 years ago
Best ResponseYou've already chosen the best response.2oh cool :) ive just skipped a step : red side = \(\sqrt{2^2+6^2} = \sqrt{4+36} = ?\)

ganeshie8
 2 years ago
Best ResponseYou've already chosen the best response.2find the lengths of remaining sides in any way u wish, and add them all up

Gabylovesyou
 2 years ago
Best ResponseYou've already chosen the best response.1for pt it would be 4^2 + 10^2

ganeshie8
 2 years ago
Best ResponseYou've already chosen the best response.2Yes ! dont forget the sqrt

ganeshie8
 2 years ago
Best ResponseYou've already chosen the best response.2\(PT^2 = 4^2 + 10^2\) \(PT = \sqrt{4^2 + 10^2} = \sqrt{116}\)

Gabylovesyou
 2 years ago
Best ResponseYou've already chosen the best response.1how do i do SR O.o

Gabylovesyou
 2 years ago
Best ResponseYou've already chosen the best response.1right... lol and then the last side is sqrt 61 ?

Gabylovesyou
 2 years ago
Best ResponseYou've already chosen the best response.1do i add them all ?

ganeshie8
 2 years ago
Best ResponseYou've already chosen the best response.2yup ! perimeter = length around a shape = sum of all sides

ganeshie8
 2 years ago
Best ResponseYou've already chosen the best response.2you cannot add radicals like that

ganeshie8
 2 years ago
Best ResponseYou've already chosen the best response.2\(\large \sqrt{a} + \sqrt{b} + \sqrt{c} ~ \ne ~ \sqrt{a + b+ c}\)

ganeshie8
 2 years ago
Best ResponseYou've already chosen the best response.2You got : \(QP = \sqrt{40}\) \(PT = \sqrt{116}\) \(TS = 7\) \(SR = \sqrt{50}\) \(RQ = \sqrt{61}\)

ganeshie8
 2 years ago
Best ResponseYou've already chosen the best response.2plug each sqrt in ur calcualtor and add them all

ganeshie8
 2 years ago
Best ResponseYou've already chosen the best response.2\(QP = \sqrt{40} = \color{red}{6.32}\) \(PT = \sqrt{116} = \color{red}{10.77}\) \(TS = 7 = \color{red}{7}\) \(SR = \sqrt{50} = \color{red}{7.07}\) \(RQ = \sqrt{61} = \color{red}{7.81}\)  perimeter = \(\color{Red}{?}\)

ganeshie8
 2 years ago
Best ResponseYou've already chosen the best response.2wolfram says the same : http://www.wolframalpha.com/input/?i=sqrt%2840%29+%2B+sqrt%28116%29+%2B+7+%2B+sqrt%2850%29+%2B+sqrt%2861%29

Gabylovesyou
 2 years ago
Best ResponseYou've already chosen the best response.1so should i put 39 ?

Gabylovesyou
 2 years ago
Best ResponseYou've already chosen the best response.1or try it the long way to double check

ganeshie8
 2 years ago
Best ResponseYou've already chosen the best response.2rounding it becomes : \(38.97 \approx 39\)

ganeshie8
 2 years ago
Best ResponseYou've already chosen the best response.2Nope, both are one and same... you may try for practice if u want maybe :)

Gabylovesyou
 2 years ago
Best ResponseYou've already chosen the best response.1okay :) thank you!
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