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IceJOKER [234]
3 years ago
8

The diameter of a circular tray is 28cm. Find the area of the tray. Take[Pi=22/7] ​

Mathematics
1 answer:
adoni [48]3 years ago
8 0

Answer:

616 cm²

Step-by-step explanation:

<u>Area of circle:</u>

  • A = πr² = 1/4πd²

<u>Since d = 28 cm and π = 22/7, the area is:</u>

  • 1/4*22/7*28² = 616 cm²
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iragen [17]

Answer:

The value of 2 in 2000 is 10 times greater than the value of 2 in 200

Step-by-step explanation:

from the value of 2 in 200 to reach 2000, it takes 10 times as much because we're moving only one place (which is the thousand's digit).

6 0
3 years ago
ABCD=STQR. What is the measurement of CD?
USPshnik [31]

Step-by-step explanation:

\because \: ABCD=STQR...(Given) \\  \\  \therefore \: CD = QR \\  \\  \because \: QR = 21 \: in \\  \\  \huge \red{ \boxed{\therefore \: CD =21 \: in }}

6 0
3 years ago
Read 2 more answers
Will give brainliest for *BEST* answer!
Nataliya [291]
Use substitution and substitute y into the other equation. One of the equations already gives you y in terms of x, so use that and substitute it into the other equation. y = 3x - 4

Plug into the other equation: -3y = -9x + 12 
-3(3x-4) = -9x + 12
-9x + 12 = -9x + 12
This is an identity. So that means that any value of x makes this equation true. So B.
8 0
3 years ago
Identify the center and radius for the circle with the following equation; (x+5)^2+y^2+12y=3
rosijanka [135]
Center: (-5,-6)
Radius: 39
How to do it

Complete the square for
y
2
+
12
y
y
2
+
12
y
.

(
y
+
6
)
2
−
36
(
y
+
6
)
2
-
36
Substitute
(
y
+
6
)
2
−
36
(
y
+
6
)
2
-
36
for
y
2
+
12
y
y
2
+
12
y
in the equation
(
x
+
5
)
2
+
y
2
+
12
y
=
3
(
x
+
5
)
2
+
y
2
+
12
y
=
3
.
(
x
+
5
)
2
+
(
y
+
6
)
2
−
36
=
3
(
x
+
5
)
2
+
(
y
+
6
)
2
-
36
=
3
Move
−
36
-
36
to the right side of the equation by adding
36
36
to both sides.
(
x
+
5
)
2
+
(
y
+
6
)
2
=
3
+
36
(
x
+
5
)
2
+
(
y
+
6
)
2
=
3
+
36
Add
3
3
and
36
36
.
(
x
+
5
)
2
+
(
y
+
6
)
2
=
39
(
x
+
5
)
2
+
(
y
+
6
)
2
=
39
This is the form of a circle. Use this form to determine the center and radius of the circle.
4 0
3 years ago
What expression is equivalent to (5z2+32+2)?
erica [24]

Answer:

10z+34

Step-by-step explanation:

3 0
3 years ago
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