If one side of a square notebook measures 20 cm, what is the area of the front cover of the notebook?

Mathematics

2 answers:

GalinKa [24]4 years ago

6 0

Answer:

400 cm squared

Step-by-step explanation:

Area of Square = length*length.

A=20*20

A=400 cm squared

amm18124 years ago

3 0

Answer:

400 cm squared

Step-by-step explanation:

Area of Square = length*length.

A=20*20

A=400 cm squared

You might be interested in

he books in a private library are classified as fiction and nonfiction. There are 400 books in the library. There are 40 more fi

vfiekz [6]

First, you have to set a system of equations to determine the number of fiction and of nonfiction books.Call f the number of fiction books and n the number of nonfiction books. Then 400 = f + n. And f = n + 40 => n = f - 40 => 400 = f + f - 40 => 400 - 40 = 2f => f = 360 / 2 = 180. Now to find the probability of picking two fiction books, take into account the the Audrey will pick from 180 fiction books out of 400, and Ryan will pick from 179 fiction books out of 399, so the probability will be (180/ 400) * (179/399) = 0.20 (rounded to two decimals). Answer: 0.20

3 0

3 years ago

Simplify 4 1/2 x 2 3/5 8 3/7 117/7 8 3/10 11 7/10

Lynna [10]

Answer:

$\frac{27}{5} = 5 \frac{2}{5}$

Step-by-step explanation:

4 1/2 × 2 3/5

9/2 × 2 × 3/5

9 × 3/5

= 27/5 = 5 2/5

8 0

3 years ago

Find the approximate radius of a sphere with a surface area of 400 square inches.

Simora [160]

The equation for surface area of a sphere is SA=4*pi*r^2
We can plug in what we know to solve for r
400=4*pi*r^2
100=pi*r^2 (divide out the 4)
100/pi=r^2 (divide out the pi)
√(100/pi)=r (square root of both sides)
r=5.6 rounded to the nearest tenth

7 0

3 years ago

8 ten thousands 4 hundreds =

zhenek [66]

8,400 is your answer.

7 0

4 years ago

Read 2 more answers

Marley picked 18 bananas, which is 6 timies as many bananas as Julans picked. The equation 6x?=18 can be used to find the number

lubasha [3.4K]

Answer:

Julans had pick up 3 bananas