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3 years ago

The volume of a cylinder with a height of 25cm and a radius of 20cm

Mathematics

1 answer:

pentagon [3]3 years ago

7 0

Answer:

5652 cm³

Step-by-step explanation:

V = 2πr² + 2πrh

= (2 × 3.14 × 3.14 × 20 ×20) + (2 × 3.14 × 20 × 25)

= 2512 + 3140

= 5652 cm³

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(3x−2)(2x+3)=0
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answer
x = -3/2 and x = 2/3

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Answer:

225 in

Step-by-step explanation:

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3 years ago

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2 years ago

Write an expression to represent: The sum of four and the product of three and a number x xx.

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Answer:

4+3x

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3 years ago

A healthy human heart beats about 1,533,000 times a year. A sparrow's heart beats about 241,776,000 times in a year. About how m

Galina-37 [17]

Answer:

About 158 times

Step-by-step explanation:

Represent the rate of human heart with H and sparrow's heart with S

$H = 1,533,000\ times$

$S = 241,776,000\ times$

Required

Determine how many times faster is S than H

To do this, we simply divide S by H i.e.

$Number = \frac{S}{H}$

$Number = \frac{241,776,000}{1,533,000}$

$Number = 157.714285714$

$Number = 158$ --- approximated

Hence, the sparrow's heart beats about 158 times faster than the human hearts

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3 years ago