Here is a semicircle of radius X. x cm
a) Choose the correct expression for the perimeter of the shape.
πχ2
2πX
TIX + 2x
πX
2
A
B
С
D
b) The perimeter of the shape is 25.71 cm
+
Calculate the value of the radius x.
Take it to be 3.142

The variable z is directly proportional to x, and inversely proportional to y. when x is 4 and y is 13, z has the value 1.2307692307692. what is the value of z when x= 9, and y= 20

Match each equation with the operation you can use to solve for the variable. subtract 10. divide by 10. divide by 5. subtract 18. multiply by 10. add 18. add 10. multiply by 5. 5 = 10p arrowright p + 10 = 18 arrowright p + 18 = 5 arrowright 5p = 10 arrowright

In the figure shown below, m < 40 and ab =8. which equation could be used to find x?