Answer:
2.2.1 Area = 12.6 cm²
2.2.2 Area = 12 cm²
Step-by-step explanation:
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<u>2.2.1:</u>
The radius of the big circle is half the length of the square = 2.5 cm
The radius of the small circle is half of 3 cm = 1.5 cm
The area of the shaded portion is = Area of big circle - Area of small circle
π × 2.5²-π × 1.5² = 12.6 cm²
<u>2.2.2</u>
To find length BD (the height of the parallelogram) we need to use the Pythagorean theorem:
BD = √(5²-3²) = 4
Area = base x height = 3x4 = 12 cm²
Answer:
![\large \boxed{\sf \ \ \ a\cdot b= 6 \ \ \ }](https://tex.z-dn.net/?f=%5Clarge%20%5Cboxed%7B%5Csf%20%5C%20%5C%20%5C%20a%5Ccdot%20b%3D%206%20%5C%20%5C%20%5C%20%7D)
Step-by-step explanation:
Hello,
![(a-bi)^2 = 13 - 12i\\\\ a^2+(bi)^2-2abi = 13-12i\\\\a^2-b^2-2abi=13-12i](https://tex.z-dn.net/?f=%28a-bi%29%5E2%20%3D%2013%20-%2012i%5C%5C%5C%5C%3C%3D%3E%20a%5E2%2B%28bi%29%5E2-2abi%20%3D%2013-12i%5C%5C%5C%5C%3C%3D%3Ea%5E2-b%5E2-2abi%3D13-12i)
Imaginary term must be the same so
-2ab=-12
2ab = 12
ab = 12/2 = 6
So the product of a and b is 6
Hope this helps.
Do not hesitate if you need further explanation.
Thank you
Answer:
Triangular prism
It's not a rectangular prism or rectangular pyramid (Those exist?). It's not a pyramid because all sides (excluding the base) don't connect to a singular vortex.
The answer is 9 because 2y=16, and 16 -7 is 9. I hope this helps!
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