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1 year ago

A leather ball has a diameter of 28.4 cm. Which is the area of the piece of leather used on the surface of the ball?

Mathematics

2 answers:

MrRissso [65]1 year ago

7 0

Answer:

has the same diameter as the sphere, and height equal to its diameter. ... The surfce area of a soccer ball is 250 square inches. ... An official basketball has a radius of 12.5 cm and ... much leather is required to cover 12 official.

Step-by-step explanation:

Varvara68 [4.7K]1 year ago

5 0

Answer:

2534 cm^2 to the nearest whole number.

Step-by-step explanation:

The ball is a sphere whose surface are is 4 pi r^2

The radius r = 1/2 diameter = 1/2 * 28.4

= 14.2 cm.

The required area = 4 * pi * 14.2^2

= 2533.88 cm^2

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1 year ago

What is the length of the altitude of the equilateral triangle below?

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ANSWER

The length of the altitude is $3\sqrt{3}$ units

<u>EXPLANATION</u>

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From the diagram the altitude is $a$

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2 years ago

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The tables represent the functions f(x) and g(x). A table showing g(x) equals 2 x plus 15 with 2 columns and 7 rows. The first c

Maslowich

Answer:

(1) For x = –12, g (x) = -9

For x = –9, g (x) = -3

For x = –6, g (x) = 3

For x = –3, g (x) = 9

(2) The principal amount of money is $80.

Step-by-step explanation:

(1)

The expression of g (x) is,

$g(x)=2x+15$

The complete table is:

x g (x)

-15 $2(-15)+15=-15$

-12 $2(-12)+15=-9$

-9 $2(-9)+15=-3$

-6 $2(-6)+15=3$

-3 $2(-3)+15=9$

0 $2(0)+15=15$

(2)

The formula for simple interest is:

$I=P\times r\times t$

Given:

I = $40

r = 10%

t = 5 years.

Compute the value of <em>P</em> as follows:

$I=P\times r\times t$

$P=\frac{I}{r\times t}$

$=\frac{40}{0.10\times 5}\\\\=80$

Thus, the principal amount of money is $80.

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