Sat Math Easy Practice Worksheet With Answer Key Page 14
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17SAT Math Easy Practice Quiz #2 Answers
Geometry
4. B
(Estimated Difficulty Level: 1+)
2
The area of a circle is A = πr
. Memorize this! (See
1. B
(Estimated Difficulty Level: 1)
the answer to the previous question.) If the diameter
d is equal to 1, then the radius is r = d/2 = 1/2. The
In the figure, ABC has been divided into two parts:
2
area of the circle is then π · (1/2)
= π/4.
◦
◦
an angle measuring x
and another measuring 2x
. So,
◦
when we add these two angles, we will get 72
. In alge-
Read each question carefully and know those important
formulas! You don’t want to be the person who forgets
bra, x + 2x = 72 so that 3x = 72, resulting in x = 24.
that the circle area formula specifies radius, not diam-
2
eter, and calculates the area to be π · 1
= π.
2. C
(Estimated Difficulty Level: 1)
5. B
(Estimated Difficulty Level: 1+)
With geometry questions, it can help to put in numbers
that are given to you on the figure itself. Since the width
It may help a lot to make a figure so you can visualize
is 2 and the length is twice the width, the figure with
what is going on:
all the side lengths shown is:
y
4
B
C
B
E
5
2
2
4
3
A
4
D
A
2
The area of the rectangle is then 2 × 4 = 8, making C
(1, 1)
C
D
the correct answer.
1
x
O
1
2
3
4
5
3. D
(Estimated Difficulty Level: 1)
The figure above shows the point (1, 1) along with the
The area of a square is the square of the length of a
five possible answers for point P . Only answer B, point
side. The length of any side of the original is 4, since
(1, 5), is a distance of 4 from point (1, 1): the y-value
2
4
= 16. The new square has sides of length 2 × 4 = 8,
increases by 4 units to go from (1, 1) to (1, 5), and the
2
so the new square has area 8
= 64.
x-value doesn’t change.
2
Hint: memorize A = (side)
for a square as well as
If you know the distance formula, you could calculate
A = (length) × (width) for a rectangle, even though
the distance for each answer until you find a distance of
the rectangle formula is given at the front of each SAT
4, but it is rarely necessary to use this formula for the
math section. That will save time, and time is points
SAT.
on the SAT!
pg. 14
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