The area is 80 square ft and they give us the width which is 8’ so 8 times 10 gives us 80 square feet which is the area meaning 10 is the length now we add 8+8= 16 and then 10+10= 20 20+16= 36 so the answer is 36 for the question.
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Two factors of 20 that add up to nine are 4 and 5, the factors are 4 and 5 because you could multiply 4*5, the also add up to 9, 4+5. In conclusion, the factors that add up to 9 are 4 and 5
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A1=6.9
a) an=(an-1)(1.1)
b) an=(6.9)(1.1^n-1)
c) 46.419 billion
Answer:
78.5714286 cm²
Step-by-step explanation:
The equation for the area of a circle is πr².
You can work out the radius (r) by halving the value of the diameter, which is given as 10cm.
You then square this, so 5² = 25.
Finally, multiply this by pi which is given to you as 22/7.
(22/7) x 25
3.14285714286 x 25 = 78.5714285714, to be exact.