Yr 8 - 26thOct [P1 20]

ABCD is a rectangle. Given that AB = (4x + 6) cm and BC = (x - 4) cm and the perimeter of the rectangle is 54 cm. Find the value of x.

Calculate the total area of the shaded regions.

A factory produces 660 cupcakes in an hour.

How many cupcakes will it produce in 8 minutes?

Mrs. Wong has 900 grams of flour. She uses $\frac{7}{12}$ of the flour to bake biscuits. 

How many grams of flour does she have left? 

Given that $F=\frac{9c}{5}+32$ .
Find the value of  $c$ when  $F=50$ .   

Calculate the angle x.

Calculate the reflex angle STR.

Find the sum of perfect squares between 20 and 40.

FInd the value of $y$ in the expression below.
 $\frac{2}{10}+\frac{4}{y}+\frac{2}{1000}=0.242$  

Find the LCM of 12, 18 and 30.