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3 years ago

A square has a side of 6.25 feet. What is the area in square feet? Round to the correct significant digits.

1 answer:

4 0

Area of a square = side^2
area = 6.25^2 = <span> <span> <span> 39.0625 </span> </span> </span> square feet

= 39.06 (rounded)

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lorena lifeguards at a lap pool that is 25 yards long, 10 ards wide, and 2 yards deep. There is a drain around he entire top edg

Varvara68 [4.7K]

The true statements about the pool are

The drain is best measured using perimeter
The area of the cover is 250 square yards
One edge of the pool measures 10 yd

<h3>How to determine true statements?</h3>

The given parameters are:

Length = 25 yards
Width = 10 yards
Depth = 2 yards

To measure the drain, we simply calculate the perimeter of the edge of the pool.

This means that (a) is correct

When the volume is calculated, the unit is cubic yard or yd³.

This means that (b) is wrong

The area of the cover is:

Area = Length * Width

This gives

Area = 25 yards * 10 yards

Evaluate

Area = 250 square yards

This means that (c) is correct

The length of the drain is calculated as:

Perimeter = 2 *(Length + Width)

This gives

Perimeter = 2 * (25 + 10)

Evaluate

Perimeter = 70

This means that (d) is wrong

Lastly (e) is correct, because the width of pool is 10 yards

Read more about perimeter and volume at:

brainly.com/question/15465114

#SPJ1

7 0

2 years ago

54 × 5/6 =<br><br> 28 × 2/7 =

Setler79 [48]

54    5 270
------- × ------- = --------- = 45
1    6 6

28   2   56
------- × ------ = ------- = 8
1 7 7

4 0

3 years ago

Subtract 1.05 from a certain number. Multiply the difference by 0.8, add 2.84 to the product then divide the sum by 0.01 and get

attashe74 [19]

Just do the whole process backwards
700*0.01=7
7-2.84=4.16
4.16/0.8=5.2
5.2+1.05=6.25

8 0

3 years ago

23÷10=<br> how to work it out

zaharov [31]

The answer is 2.3 :)

7 0

4 years ago

Read 2 more answers

5. GEOMETRY The volume of a rectangular pyramid is one third the product of the area of its base and its height. Find

tatuchka [14]

Answer:

x³ + 7x² + 15x + 9

Step-by-step explanation:

Given that the volume (V) of a rectangular pyramid is

V = $\frac{1}{3}$ A h ( A is the area of base and h the height ), then

V = $\frac{1}{3}$ (3x² + 12x + 9)(x + 3) ← factor out 3 from A

= $\frac{1}{3}$ × 3(x² + 4x + 3)(x + 3)

= (x² + 4x + 3)(x + 3)

Each term in the second factor is multiplied by each term in the first factor, that is

x² (x + 3) + 4x(x + 3) + 3(x + 3) ← distribute parenthesis

= x³ + 3x² + 4x² + 12x + 3x + 9 ← collect like terms

= x³ + 7x² + 15x + 9

Thus the expression for the volume is

V = x³ + 7x² + 15x + 9

4 0

3 years ago