Step-by-step explanation:
Since we have given that
Material needed to make a pillow cover is given by

We need to calculate the material which will be needed to make 9 pillows covers.
So, we use the "Multiplication Operation" as we need the value for more pillow covers :


Answer: y2-1/y-4y+4
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Answer:
THE ANSWER IS A SPHERE
Step-by-step explanation:
Because it is a 3-dimensional, perfectly round and has solid surface.
Answer:
15 cm
Step-by-step explanation:
Given that :
Reading at one end, initial reading = 3.5 cm
Reading at the other end, final reading = 18.5 cm
Length of needle :
Final Reading - Initial reading
18.5cm - 3.5cm
= 15cm
The answer is 315 as the formula is : a+b/2•h.