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Let’s check out your problem:
Triangle
\newline
b
=
30
m
h
=
15.6
m
\begin{array}{l} b=30 \mathrm{~m} \\ h=15.6 \mathrm{~m} \end{array}
b
=
30
m
h
=
15.6
m
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Home
Math Problems
Grade 8
Checkpoint: Rational and irrational numbers
Full solution
Q.
Triangle
\newline
b
=
30
m
h
=
15.6
m
\begin{array}{l} b=30 \mathrm{~m} \\ h=15.6 \mathrm{~m} \end{array}
b
=
30
m
h
=
15.6
m
Recall Triangle Area Formula:
Recall the formula for the
area of a triangle
.
\newline
The area
A
A
A
of a triangle is given by the formula
A
=
base
×
height
2
A = \frac{\text{base} \times \text{height}}{2}
A
=
2
base
×
height
.
Substitute Given Values:
Substitute the given values into the formula.
\newline
Here, the base
b
b
b
is
30
m
30\,\text{m}
30
m
, and the height
h
h
h
is
15.6
m
15.6\,\text{m}
15.6
m
. So,
A
=
30
m
×
15.6
m
2
A = \frac{30\,\text{m} \times 15.6\,\text{m}}{2}
A
=
2
30
m
×
15.6
m
.
Perform Multiplication:
Perform the multiplication.
\newline
Multiply the base and height:
30
m
×
15.6
m
=
468
m
2
30\,\text{m} \times 15.6\,\text{m} = 468\,\text{m}^2
30
m
×
15.6
m
=
468
m
2
.
Divide to Find Area:
Divide by
2
2
2
to find the area.
\newline
Now divide the result by
2
2
2
to get the area:
468
m
2
/
2
=
234
m
2
468\,\text{m}^2 / 2 = 234\,\text{m}^2
468
m
2
/2
=
234
m
2
.
More problems from Checkpoint: Rational and irrational numbers
Question
Solve for
h
h
h
. \begin{align*} \frac{h}{6}-1 &= -3, \ h = \Box \end{align*}
Get tutor help
Posted 8 months ago
Question
Solve for
x
x
x
.
−
30
=
5
(
x
+
1
)
x
=
□
\begin{align*}-30 &= 5(x+1)\\x &= \square\end{align*}
−
30
x
=
5
(
x
+
1
)
=
□
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Posted 8 months ago
Question
Which of the following sets of numbers could represent the three sides of a triangle?
\newline
{
13
,
22
,
32
}
\{13,22,32\}
{
13
,
22
,
32
}
\newline
{
11
,
22
,
33
}
\{11,22,33\}
{
11
,
22
,
33
}
\newline
{
14
,
20
,
36
}
\{14,20,36\}
{
14
,
20
,
36
}
\newline
{
15
,
21
,
37
}
\{15,21,37\}
{
15
,
21
,
37
}
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Posted 9 months ago
Question
Which of the following sets of numbers could not represent the three sides of a triangle?
\newline
{
14
,
27
,
40
}
\{14,27,40\}
{
14
,
27
,
40
}
\newline
{
4
,
9
,
14
}
\{4,9,14\}
{
4
,
9
,
14
}
\newline
{
9
,
21
,
29
}
\{9,21,29\}
{
9
,
21
,
29
}
\newline
{
12
,
17
,
28
}
\{12,17,28\}
{
12
,
17
,
28
}
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Posted 8 months ago
Question
Which of the following sets of numbers could not represent the three sides of a triangle?
\newline
{
11
,
14
,
24
}
\{11,14,24\}
{
11
,
14
,
24
}
\newline
{
12
,
21
,
33
}
\{12,21,33\}
{
12
,
21
,
33
}
\newline
{
15
,
25
,
39
}
\{15,25,39\}
{
15
,
25
,
39
}
\newline
{
10
,
22
,
31
}
\{10,22,31\}
{
10
,
22
,
31
}
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Posted 8 months ago
Question
Which of the following sets of numbers could not represent the three sides of a triangle?
\newline
{
9
,
19
,
27
}
\{9,19,27\}
{
9
,
19
,
27
}
\newline
{
6
,
20
,
27
}
\{6,20,27\}
{
6
,
20
,
27
}
\newline
{
14
,
19
,
32
}
\{14,19,32\}
{
14
,
19
,
32
}
\newline
{
9
,
18
,
25
}
\{9,18,25\}
{
9
,
18
,
25
}
Get tutor help
Posted 9 months ago
Question
Which of the following sets of numbers could not represent the three sides of a triangle?
\newline
{
13
,
22
,
36
}
\{13,22,36\}
{
13
,
22
,
36
}
\newline
{
8
,
18
,
25
}
\{8,18,25\}
{
8
,
18
,
25
}
\newline
{
4
,
13
,
15
}
\{4,13,15\}
{
4
,
13
,
15
}
\newline
{
5
,
8
,
12
}
\{5,8,12\}
{
5
,
8
,
12
}
Get tutor help
Posted 8 months ago
Question
Which of the following sets of numbers could represent the three sides of a triangle?
\newline
{
10
,
13
,
22
}
\{10,13,22\}
{
10
,
13
,
22
}
\newline
{
14
,
26
,
42
}
\{14,26,42\}
{
14
,
26
,
42
}
\newline
{
6
,
14
,
22
}
\{6,14,22\}
{
6
,
14
,
22
}
\newline
{
15
,
18
,
34
}
\{15,18,34\}
{
15
,
18
,
34
}
Get tutor help
Posted 9 months ago
Question
Which of the following sets of numbers could represent the three sides of a triangle?
\newline
{
4
,
10
,
14
}
\{4,10,14\}
{
4
,
10
,
14
}
\newline
{
12
,
25
,
36
}
\{12,25,36\}
{
12
,
25
,
36
}
\newline
{
6
,
8
,
14
}
\{6,8,14\}
{
6
,
8
,
14
}
\newline
{
15
,
30
,
46
}
\{15,30,46\}
{
15
,
30
,
46
}
Get tutor help
Posted 9 months ago
Question
Which of the following sets of numbers could not represent the three sides of a triangle?
\newline
{
11
,
13
,
26
}
\{11,13,26\}
{
11
,
13
,
26
}
\newline
{
13
,
19
,
30
}
\{13,19,30\}
{
13
,
19
,
30
}
\newline
{
6
,
10
,
15
}
\{6,10,15\}
{
6
,
10
,
15
}
\newline
{
13
,
19
,
29
}
\{13,19,29\}
{
13
,
19
,
29
}
Get tutor help
Posted 9 months ago
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