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steven12372
24.07.2019 •
Mathematics
Geometry question: abcd and efgh are squares. if jh = 4 cm and jc = 9 cm, then what is the area of the shaded region?
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Ответ:
First you have to find the area of the bigger square
When it goes from the center to a corner you multiply the value by 2 to find one side
9 * 2 =18
Now you find the area
18 * 18 = 324
Now we find the area of the smaller region
4 * 2 = 8
Find the area
8 * 8 = 64
Now we subtract these
324 - 64 = 260
The answer is 260
Hope this helps!
Ответ:
Area of the shaded region is 130 cm².
Step-by-step explanation:
We can find the area of the shaded region of the square by subtracting area of smaller square from the bigger one.
JH = 4 cm and JC = 9 cm are the measurements.
Now we find one side of the smaller square.
Since HF²= EF² + EH²
(2×JH)² = EF² + EF² [Since HF = 2× JH and EF = EH]
(8)² = 2×EF²
EF² = 32
Now area of smaller square = EF² = 32 cm²
Similarly for bigger square
AC² = AB² + BC²
(2×JC)² = AB² + BC²
18² = 2×AB² (Since AB = BC)
AB² = 324/2 = 162
Area of Bigger square = AB² = 162 cm²
Now area of the shaded part = 162 - 32 = 130 cm²
Therefore area of the shaded area will be = 130 cm²
Ответ:
I think it's A for the first one and B in the second.
Step-by-step explanation:
I'm not sure.