3 years ago

How to do tHis? Help me pls!!!

Mathematics

1 answer:

ad-work [718]3 years ago

7 0

Area of a trapezoid = h/2 ( a + b) where h = height and a and b are the lengths of the 2 parallel sides.

So here we have

Area = 12/2 ( 18 + 23)

= 246 in^2 Answer

ii . volume of a sphere = 4/3 pi r^3 so

1436.03 = 4/3 pi r^3

r^3 = 1436.03 / (4/3 * pi) = 342.827

r = cube root of 342.827 = 7.0 m Answer

You might be interested in

What is the area of the parallelogram below? Use the formula a=bh

Nana76 [90]

Where where is the formula you didn't even post a picture?

6 0

3 years ago

Determine the sum of the following series. ∑n=1[infinity](4^n+8^n/13n)

Gnoma [55]

N=1 4+7n=71 that is the answer

3 0

2 years ago

At the carnival, 3 rides on the MoonCoaster cost $21. How much<br> do 5 rides cost?

Bogdan [553]

Answer:

$35 dollars

Step-by-step explanation:

So we know that 3 rides costs $21. If you then take 21/3 you get 7, you're then going to take 7x5 and you will get 35. Therefore 5 rides on the MoonCoaster cost $35. Hope this helps!

4 0

3 years ago

Read 2 more answers

Find the amount of decrease if 68 is decreased by 15%

olya-2409 [2.1K]

I think 10.2 when I use calculater

3 0

3 years ago

The depth of a lake in cedar burg changes over time due to rain fall and evaporation this year it was 39 feet which is 25% less

Nostrana [21]

Answer:

The depth of the lake last year was 52 feet

Step-by-step explanation:

Given as :

This year depth of lake = 39 feet

Let the last year depth of lake = x feet

Now,

According to question :

The depth this year is 25% less than that of last year

I.e 39 feet = x - 25% of x

Or, 39 feet = $\frac{75x}{100}$

or, x = $\frac{3900}{75}$

∴ x = 52 feet

Hence The depth of the lake last year was 52 feet Answer

4 0

3 years ago