now, we're assuming "to the building" means "to the ground", since we don't know the building's height, so we're also assuming the 1200m is above the building, as you see in the picture.

make sure your calculator is in Degree mode.

7 0

3 years ago

a rectangular has a perimeter of 50 centimeters if the width of the rectangular is 10 centimeters what is its length

kogti [31]

10+10=20 50-20=30/2= 15 cm for length

5 0

2 years ago

Both questions answered please

Otrada [13]

Sorry I can't do number six, but the answer to number five should be ≈24.01 using the cosine ratio.

5 0

3 years ago

Use Wolframalpha to find the exact volume of the solid obtained by rotating about x = [pi]/2 the region bounded by y = sin^2x, y

Alex777 [14]

Answer:

Step-by-step explanation:

Here the region between two curves is rotated about a vertical line.

The functions are

$y = sin^2x, \\y = sin^4x, \\x in [0,[pi]/2].$

Intersecting points are x=0 and x =pi/2

Since rotated about x = pi/2 we get

using cylindrical shell method

Volume = $2\pi rh\\=2\pi \int\limits^\frac{\pi}{2} _0 {xy} \, dx \\=2\pi \int\limits^\frac{\pi}{2} _0 (x+\frac{\pi}{2} )(sin^2 x -sin^4 x) dx\\$

From wolfram alpha we find that

Volume= $2\pi (\frac{3\pi^2 }{64)} =\frac{6\pi^3}{64}$

4 0

3 years ago