3 years ago

Find the area and perimeter of the following. Round answers to the nearest tenth.

1 answer:

6 0

4. A = 18²/2 = 162 . . . . . . . . . . . . . . . units²
.. P = 4*18/√2 = 36√2 ≈ 50.9 . . . . . units

6. The area of the unshaded rectangle is
.. a = (3√2)*(1√2) = 6
The area of the larger square is
.. A = 4² = 16

The shaded area is the difference of these
.. 16 -6 = 10 . . . . units²

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I: y<2*x
II: y<8
III: x>2

a: (5,3):
I: 3<2*5
3<10 ?yes
II: 3<8 ?yes
III: 5>2 ?yes
This is a solution

b: (6,0):
I: 0<2*6
0<12 ?yes
II: 0<8 ?yes
III: 6>2 ?yes
This is a solution

c: (3,3):
I: 3<2*3
3<6 ?yes
II: 3<8 ?yes
III: 3>2 ?yes
This is a solution

d: (1,-4):
I: -4<2*1
-4<2 ?yes
II: -4<8 ?yes
III: 1>2 ?no
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e: (4,-2):
I: -2<2*4
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II: -2<8 ?yes
III: 4>2 ?yes
This is a solution

f: (5,9):
I: 9<2*5
9<10 ?yes
II: 9<8 ?no
This is not a solution

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