The area of a square is its side length squared. So the side length of the square squared is 42, so the side length of the square is sqrt(42). The perimeter of the square is 4 times the side length, or 4sqrt(42), which is approximately 25.92.

3 0

4 years ago

Simplify the expression 6h+(−7.7d)−18+5d−2.8h<br>.

g100num [7]

Answer : -2.7d+3.2h-18

Please leave a thanks <3

7 0

3 years ago

Read 2 more answers

What are three ratios that are equivalent to 8 : 20 8:20

goldfiish [28.3K]

Answer:

4:10 16:40 and 32:80

Step-by-step explanation:

5 0

3 years ago

A glass top of an office table has sides of 21 inches. What is its area?

11Alexandr11 [23.1K]

Answer:

441 $inches^{2}$

Step-by-step explanation:

If this is a rectangle, meaning the width and the legnth is different, there is no way in solving this.

However, if it is a square, meaning all the sides are the same,

we can know that every side is 21 inches long.

An area is the width times the length, which is both 21 in this case.

21 times 21 = 441.

441 inches squared.

3 0

3 years ago