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Harman [31]
2 years ago
6

What is the lateral area of a cone with radius 19 cm and slant height 11 cm?

Mathematics
1 answer:
o-na [289]2 years ago
6 0

Answer:

The answer is 209 pi cm^2

L.A.(Lateral Area) = π19×11 = 209 π

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The area of a rectangle is 108 m2 and its diagonal is 15 m. Find
Andre45 [30]

Answer:

47.6m.

Step by step solution:

Perimeter of a triangle = base + 2 . length____(1)

Area of a triangle = 1/2 . base . diagonal

108 = 1/2 . base . 15

multiplying both sides by 2:

216 = 15 . base

dividing both sides by 15:

base = 14.4m

But the diagonal divides the triangle into two

right angle triangles each with the same length (hypotenuse),base and diagonal(height).

Taking one right angle triangle:

And using pythagoras theorem;

length² = base² + diagonal ²

length² = 7.2² + 15²

Note: Base of each right angle triangle is 7.2 which would sum up to be 14.4 the base of the full triangle.

length² = 276.84

taking the square root of both sides:

length = 16.6m

Putting the values of the base and length into equation (1).

Perimeter of the triangle = 14.4 + 2 . 16.6

Note: We are dealing with the whole triangle

now hence the base is 14.4m.

Perimeter of the triangle = 14.4 + 33.2 = 47.6m.

6 0
3 years ago
Read 2 more answers
200 + 200m - 100 - 100m + 100
slava [35]

Answer:

200+100m

Step-by-step explanation:

Simplified by collecting like terms

5 0
1 year ago
What are the coordinates of the vertices of the figure A'B'C'after the following transformation. (x,y) ---> ( y, -x)​
topjm [15]

9514 1404 393

Answer:

  • A'(4, 4)
  • B'(4, 2)
  • C'(1, 2)

Step-by-step explanation:

Using the transformation ...

  (x,y) ⇒ (y, -x) . . . . . . rotation 90° CW

we have ...

  A(-4, 4) ⇒ A'(4, 4)

  B(-2, 4) ⇒ B'(4, 2)

  C( -2, 1) ⇒ C'(1, 2)

5 0
2 years ago
A radar measures the speed of a car at 45 miles per hour. The actual speed of the car is 40 miles per hour what is the percent e
sweet-ann [11.9K]
Hi☺️ i think it is around the number of less than 2
hope this help !
8 0
2 years ago
1/2(x + 5)2 + 2 = 42.5
Monica [59]

Answer:

x=35.5

Step-by-step explanation:

reduce numbers

remove parentheses

add the numbers

move constant to the right

subtract numbers

7 0
2 years ago
Read 2 more answers
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