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babunello [35]
3 years ago
8

Workout the circumstance of a circle with radius 9 cm take π to be 3.142 to 1 decimal place​

Mathematics
1 answer:
Goryan [66]3 years ago
5 0

Answer:

C = 56.6 cm

Step-by-step explanation:

The circumference of a circle is

C = 2 * pi *r

C = 2 * 3.142 * 9

C =56.556

Rounded to 1 decimal place

C = 56.6 cm

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Mr. Richards purchased 8 T-shirts for the volleyball team. The total cost of the T-shirts was $70.56. How much did each shirt co
bezimeni [28]

Answer:

$8.82

Step-by-step explanation:

$70.56÷8 =$8.82 total

7 0
3 years ago
Find in the triangle. Round to the nearest degree.<br> a.<br> 45°<br> C. 60°<br> b. 59°<br> d. 42°
aleksklad [387]

Answer:

Theta = 59 degrees

Step-by-step explanation:

Here, we want to get the value of the marked angle

To do this, we use the appropriate trigonometric ratio

From what we have,

The side 42 ft is adjacent the angle given

The side facing the right angle is 82 ft

The trigonometric ratio that connects the adjacent and the hypotenuse is cosine. It is the ratio of the adjacent to the hypotenuse

Cos theta = 42/82

theta = cos^-1 0.5122

theta= 59.189

To the nearest degrees, this is 59 degrees

6 0
3 years ago
Determine if the triangle with the given sides is acute, obtuse, or right. 36, 49, 60
kotykmax [81]
<span>When given 3 triangle sides, to determine if the triangle is acute, right or obtuse:
</span>1) Square all 3 sides.
2) Sum the squares of the 2 shortest sides.
3) Compare this sum to the square of the 3rd side.

if sum > 3rd side²   Acute Triangle
if sum = 3rd side²   Right Triangle<span>
if sum < 3rd side²   Obtuse Triangle

1) 1,296   2,401   3,600
2) Sum = 3,697
3) </span><span>3,697 is greater than 3,600
Therefore, the triangle is acute.

Source:
http://www.1728.org/triantest.htm


</span>
4 0
3 years ago
The diameter of a circle is 20m. Find the circumference to the nearest tenth
AlladinOne [14]

Answer:

62.8

Step-by-step explanation:

Using the circumference formula (πd) we can see that the answer is 20π, or 62.8

3 0
3 years ago
Proof. Give: &lt;1 and &lt;2 are complementary, angle 1 is congruent to angle 3 and angle 2 is congruent to angle 4. Prove: angl
dangina [55]
<1 and <2 are complementary : given
<1+<2=90 : definition of complementary
<1 congruent <3 : given
<2 congruent <4 : given
<3 congruent <4 : transitive property
5 0
3 years ago
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