The formula for the area of a circle is A=πr².
A=πr²
A=π4²
A=π16
Assuming you use 3.14 for π,
A≈50.27
Answer:
m<HIG and alternate interior angles
HOPE IT HELPS
Answer:
a). 59.049°C
b). 2.1179 seconds
Step-by-step explanation:
Expression representing the final temperature after decrease in temperature of the metal from 100°C to T°C is,
T = 
where x = duration of cooling
a). Temperature when x = 5 seconds
T = 100(0.9)⁵
= 59.049
≈ 59.049°C
b). If the temperature of the metal decreases from 100°C to 80°C
Which means for T = 80°C we have to calculate the duration of cooling 'x' seconds
80 =
0.8 = 
By taking log on both the sides
log(0.8) =log[]
-0.09691 = x[log(0.9)]
-0.09691 = -0.045757x
x = 
x = 2.1179
x ≈ 2.1179 seconds
Answer:
60 square units
Step-by-step explanation:
We can use Pythagoras to solve this as appropriately projecting lines from any point will form a triangle. The vertical and horizontal lengths of which can be read of from the axis.
The distance between two points is √
(
x
1
−
x
2
)
2
+
(
y
1
−
y
2
)
2
Let the distance between two points be
d
i
Distance between points A and B
d
1
=
√
[
3
−
(
−
3
)
]
2
+
[
7
−
5
]
2
d
1
=
√ 36
+
4
=
√
2
2
×
10
=
2
√
10
Distance between points B and C
d2
=
√
[
6
−
3
]
2
+
[
7
−
(
−
2
)
]
2
d
2
=
√
9+
81
=
√
3
2
×
10
=
3
√
10
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Area =
d
1
×
d
2
=
2
√
10
×
3
√
10
=
60
YW :>
Answer:
37.50
Step-by-step explanation:
Take the amount per hour and multiply by the hours worked
7.50 * 5
37.50
