Question

Ally is creating a web page using square icons to link to different pages. Each square icon contains 1024 pixels (dots), arranged in rows. Each side of the square contains the same number of pixels.

Ally needs to know how many pixels (p) tall her icons are. She writes p ^ 2 = 1024 to find the value of p.

FLAT WEB ICONS

Four students attempt to do the calculations to find the number of pixels tall her icons are. Their work is shown in the table bellow


Harry

p ^ 2 = 1024

sqrt(p ^ 2) = sqrt(1024)

p = 32


Sherlock

p ^ 2 = 1024

p = 1024 ^ 2

p = 1048576


Frodo

p ^ 2 = 1024

sqrt(p ^ 2) = plus/minus sqrt(1024)

sqrt(p ^ 2) = sqrt(1024) * or * sqrt(p ^ 2) = - sqrt(1024)

p = 32 or p = - 32


Elizabeth

p ^ 2 = 1024

(p ^ 2)/2 = 1024/2

p = 512


The student that solved it correctly is *blank 1*

However, the answer needs to be *blank 2*

because the height of the icon *blank 3*


Options for blank 1

A Elizabeth
B Sherlock
C frodo
D Harry

Options for blank 2
A negative
B positive

Options for blank 3

A is then all the pixels combined
B cannot be negative
C is going down

Make sure no one can find this

Answer 1

The student that solved it correctly is **D Harry**.

However, the answer needs to be **B positive** because the height of the icon **B cannot be negative**.