All categories

2 years ago

Martina used 3 as the value of pi to estimate the area of a circular patio that had a diameter of 26 ft.

Mathematics

1 answer:

dezoksy [38]2 years ago

6 0

Answer:

507 ft²

Step-by-step explanation:

the area (A) of a circle is calculated as

A = πr² ( r is the radius )

given diameter = 26 then r = 26 ÷ 2 = 13 , so

A = π × 13² ≈ 3 × 169 = 507 ft²

You might be interested in

Which is a factor of x2 – 9x + 14?

PtichkaEL [24]

Answer:

(x-7)(x-2)

Step-by-step explanation:

what multiples to 14, but add to -9 ?

-7*-2 = 14

-7*-2= -9

8 0

3 years ago

Read 2 more answers

Does 5mm, 1mm, 10mm make a triangle

pogonyaev

Answer:

Step-by-step explanation:

No. Each side must be less than the sum of the remaining two sides.

10 ≮ 5+1

6 0

3 years ago

The line plots show the results of a survey of 12 boys and 12 girls about how many hours they spent reading for pleasure the pre

lana66690 [7]

Answer:

The range for boys is 0-12 and the mean is 5.1

The range for girls is 2-8 and the mean is 5.3

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

3. For the equation-4y = &r, what is the constant of variation? (1 point)<br> ООО<br> 02

alexandr1967 [171]

Answer:

3).

$- 4y = 8x \\ \frac{y}{x} = \frac{8}{ - 4} \\ \frac{y}{x} = - 2 \\ y = - 2x \\ hence \: constant \: is \: - 2$

4).

$y \alpha x \\ y = kx \\ where \: k \: is \: the \: constant \: of \: proportionality \\ when \: y = 24 \: and \: x = 8 \\ substitute \: in \: y = kx \\ 24 = 8k \\ k = \frac{24}{8} \\ k = 3 \\ value \: of \: constant = 3$

If it was by 10, k = 3 by 10

k = 30

5).

$general \: equation \: of \: line \\ y = mx + c \\ but \: m = \frac{2}{3} \: and \: c = 9 \\ substitute \: for \: m \: and \: c \: in \: y = mx + c \\ y = \frac{2}{3} x + 9 \\ alternatively \\ 3y = 2x + 27$

7 0

3 years ago

Help plz its urgent.

soldi70 [24.7K]

Answer:

200 tax 33

Step-by-step explanation:

4 0

3 years ago