Volume of the spherical tank will be given by:
V=4/3πr³
thus the volume of the tank will be:
V=4/3×π×(10/2)³=523.59877756~523.6 ft³
Given that 523.6 ft³ can hold 358,000,000 BTUs of propane, the amount that 1 ft³ will be given by:
[total amount]/[total volume]
=358,000,000/523.6
=683,728.0367 BTUs/ft³
=684,000 BTUs/ft³ (in thousand)
Answer:
straight angle
Step-by-step explanation:
Answer:
The correct answer is "18k+27r". A further explanation is provided below.
Step-by-step explanation:
The given expression is:
⇒ ![-9(-2k-3r)](https://tex.z-dn.net/?f=-9%28-2k-3r%29)
As we know the identities, such as:
By applying the above identities in the given expression and after opening the brackets, we get
= ![-9(-2k-3r)](https://tex.z-dn.net/?f=-9%28-2k-3r%29)
= ![18k+27r](https://tex.z-dn.net/?f=18k%2B27r)
Answer:
20cm
Step-by-step explanation:
for the triangle:
Perimeter = 30cm
a + a + a = 30
3a = 30
hence a = 10cm
For the rectangle:
Perimeter = 30cm
a + a + b + b = 30
but a = 10cm
10 + 10 + b + b = 30
20 + 2b = 30
2b = 10
hence b = 5cm
Perimeter of square = b + b + b + b
= 5 + 5 + 5 + 5 = 20cm