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3 years ago

I need to find the area of each figure

Mathematics

1 answer:

jeka57 [31]3 years ago

4 0

What on earth is ging i4yg5r boyg4cbg gueytg kyfg

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A sculpture is made of solid copper in the shape of a cone. The sculpture is 67 inches tall, and its base has a radius of 15 inc

ruslelena [56]

Answer:

$16,725.21

Step-by-step explanation:

To get the cost of the copper used for the sculpture, we must first determine the volume of the object which is given as a cone

Recall that the volume V of a cone

= 1/3Pir^2h

where r is the base radius and h is the height

Given that the sculpture is 67 inches tall, and its base has a radius of 15 inches, the volume of the sculpture

= 1/3 * 3.14 * 15^2 * 67

= 15,778.5 cubic inch

If copper costs 1.06$ per cubic inch, then the cost of the copper for the sculpture

= 15,778.5 * 1.06

= $16,725.21

6 0

3 years ago

If you place a 20ft ladder 4ft from the base of the wall, what is the angle measure of the ladder to the ground to the nearest d

artcher [175]

Given:

Length of the ladder = 20 ft

Distance between base of the ladder and wall = 4 ft

To find:

The angle measure of the ladder to the ground to the nearest degree.

Solution:

Ladder is the hypotenuse of a right triangle. Here, we have,

Hypotenuse = 20 ft

Base = 4 ft

In a right angle triangle,

$\cos \theta=\dfrac{Base}{Hypotenuse}$

$\cos \theta=\dfrac{4}{20}$

$\cos \theta=\dfrac{1}{5}$

Taking cos inverse on both sides, we get

$\theta=\cos^{-1}\dfrac{1}{5}$

$\theta=78.46304^\circ$

$\theta\approx 78^\circ$

Therefore, the correct option is A.

8 0

3 years ago

Can anyone solve this?

quester [9]

Part D, I think it’s D

6 0

3 years ago

The line plot shows the number of books read by 15 students over the summer. How many students read 3 or fewer books? A. 5 , B.

fgiga [73]

There is only one, and The answer is d

8 0

3 years ago

Sofia makes and sells stuffed toys. She uses special fabric to cover a foam

valkas [14]

Answer:

384 square cm

Step-by-step explanation:

Fabric used will be equal to the total surface of the cubical block.

$fabric \: used \\ = 6 {side}^{2} \\ = 6 \times {8}^{2} \\ = 6 \times 64 \\ = 384 \: {cm}^{2} \\$

8 0

3 years ago