Square Arrangement

Geometry Level 4

Can you find the area of the rectangle?


The answer is 1056.

This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try refreshing the page, (b) enabling javascript if it is disabled on your browser and, finally, (c) loading the non-javascript version of this page . We're sorry about the hassle.

4 solutions

Unstable Chickoy
May 30, 2014

b = 1 + g

g = f + 1

b = 2 + f

c = b + 1

c = 2 + f + 1

c = 3 + f

d = e + c

d = e + 3 + f

d = 3 + e + f

h = f + g

h = 2f + 1

i = e + d

i = 2e + 3 + f

vertical sides give d + c + b = i + h

subtituting values result to e = 4

horizontal sides give b + g + h = d + i

subtituting values result to f = 7

then

b = 9 ; c = 10 ; d = 14 ; g = 8 ; h = 15 ; i = 18

sides are 33 x 32

area = 1056

The problem seems to be wrong !!! My reason :-
All 4 sides of each square are equal. Therefore........

D + I = H + I..................................................H = D
B + C + D = B + G + H...................................C = G
C = B + 1 ...........C + 1 = G+ 1 = B ..<...> C = B - 1 !!!!!!!!!!!!!!!!

CAN ANY ONE HELP ??

Niranjan Khanderia - 6 years, 11 months ago

Log in to reply

the resulting figure is not a square, it is a rectangle, your first 2 deductions come from assuming that the resulting figure is a square. that is flawed

Pratik Soni - 6 years, 11 months ago

1=5 2=25 3=125 4=625 5=?

jatin g - 7 years ago

Log in to reply

5 = 1 \boxed{5 = 1} from 1 = 5 1 = 5 :)

Unstable Chickoy - 7 years ago

the answer is you lol

Jun-Jie Vosotros - 7 years ago
Marek Bernat
May 29, 2014

Start with the area around the smallest rectangle. We see immediately that (using small letters to denote length of the corresponding squares), f + 1 = g , f+1 = g, g + 1 = b , g + 1 = b, 1 + b = c , 1 + b = c, 1 + c = e + f . 1+c = e+ f. From these equations we can get e = 4 e = 4 and b = f + 2 b = f + 2 , c = f + 3 c = f + 3 .

The picture also shows that d = c + e = f + 7 d = c + e = f + 7 and i = d + e = f + 11 i = d + e = f + 11 . Moreover h = f + g = 2 f + 1 h = f + g = 2f + 1 . Now the width of the rectangle can be expressed both as d + i d + i and as b + g + h b + g + h . Therefore it must hold that f + 7 + f + 11 = f + 2 + f + 1 + 2 f + 1 , f + 7 + f + 11 = f + 2 + f + 1 + 2f + 1, which implies that f = 7 f = 7 . Plugging this back into other equations we get i = 18 i = 18 , h = 15 h = 15 and d = 14 d = 14 . Therefore the width of the rectangle is d + i = 32 d + i = 32 and its height is i + h = 33 i + h = 33 and the resulting area turns out to be 32 33 = 1056 32 \cdot 33 = {\bf 1056} .

Yeah! This is an UKJMO question :)

Krishna Ar - 7 years ago
Haitham Ezzat
Jun 2, 2014

G=f+1 ,B=f+2 ,C=f+3 = f-1+E then e=4 ,D=c+4 = f+7 ,H=f+f+1=2f+1 ,I=d+4 = f+11 then width of triangle = i+D = f+18 ....1 ,Also Width of triangle = b+g+h = 4f+4 ..... 2 ,From 1& 2 f= 7 ,Length = d+c+b=3f+12 ,Then width = 32 & length = 33 ,Then area of rectangle = 33x32 = 1056 #

Ashwini Keshri
Jun 1, 2014

Suppose side of square B is x.

B=x

C=B+side of smallest square =x+1

G=B-side of smallest square=x-1

F=G-side of smallest square=x-2

E=C+side of smallest square-F =>x+1+1-x+2 i.e E=4

D=C+E i.e D=x+5

I=D+E i.e I=x+9

H=I+E-F =>H=x+9+4-x+2 =>H=15

F+G=H =>x-1+x-2=15=>2x-3=15=>x=9

Side A of rectangle=B+G+H=x+x-1+15=2x+14=32

Side B of rectangle=I+H=x+9+15=33

Area of rectangle= 32*33=1056

0 pending reports

×

Problem Loading...

Note Loading...

Set Loading...