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42 / 46 Marks
P is a rectangle with length 40 cm and width x cm.
Q is a rectangle with width y cm.
Р
The length of Q is 25% more than the length of P.
The area of Q is 10% less than the area of P.
x cm
Work out the ratio xiy
Give your answer in its simplest form.
40 cm
:
y cm

What is the range for 31,39,29,34,37,24,36,33,34,28

Last one and the bottom answer choice is y=(x-4)^2+1 you guys!

You are standing next to a really big circular lake. you want to measure the diameter of the lake, but you don't want to have to swim across with a measuring tape! you decide to walk around the perimeter of the lake and measure its circumference, and find that it's 400\pi\text{ m}400? m. what is the diameter dd of the lake?