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Bingel [31]
3 years ago
7

what is the area of a circle with a diameter of 4.2 centimeters? us 3.14 for pi. round your answer to the nearest tenth.

Mathematics
1 answer:
emmainna [20.7K]3 years ago
5 0
Circle Area = PI * radius^2
radius = 2.1
Circle Area = 3.14 * 2.1^2
Circle Area = <span> <span> <span> 13.8


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A 28 ft ladder is leaned against the side of a building and its base is 5 ft away from the building. How far up the building wil
Sonja [21]

Answer:

27.55ft

Step-by-step explanation:

28²-5²=x

784-25=759

square root of 759=27.55

5 0
3 years ago
Quadrilateral ABCD is inscribed in circle 0 What is m&lt;A
valentinak56 [21]
We know that
 A quadrilateral is inscribed in a circle if and only if the opposite angles are supplementary. ( Inscribed Quadrilateral Theorem)
so
m∠B+m∠D=180°
2x+(3x-5)=180
5x=180+5
5x=185
x=185/5
x=37°

m∠A=x+5-----> 37+5------> 42°

the answer is
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6 0
3 years ago
Dec 4,
sasho [114]

Answer:

y = -0.8x - 5

Step-by-step explanation:

x1 = (XA + XB) / 2 = -5

y1 = (YA + YB) / 2 = -1

m = (XA - XB) / (YA - YB) = -0

__________________________________________

(y - -1) = -0.8(x - -5)

y - -1 = -0.8x - 4

y = -0.8x - 4 + -1

y = -0.8x - 5

8 0
3 years ago
If the dimension of a square is 3 1/2 what would the perimeter be?
Eduardwww [97]
It would be 3 because in a half means like cut so what is in the middle between 2 and 4? 3 so that is correct



6 0
3 years ago
Read 2 more answers
The triangles are similar. If KL = 5, JL = 6, and PM = 9, find PN. Round to the nearest tenth.
Pachacha [2.7K]
If the triangles are similar, then the corresponding ratio of their sides have equal ratios. Through ratio and proportion, we would determine the answer.

5/6 = x/9, where x is the length for side PN

Transposing the equation so that x is on the left side:

x = (5/6)*9
x = 7.5
6 0
3 years ago
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