Answer:
Step-by-step explanation:
#We use the base diagonal and the height diagonal to calculate the beam's height:
#The volume of the beam can then be calculated as:
Hence, the beam's volume is 
Step-by-step explanation:
a ) Distance = 7150 km , speed = 780 km / hr So , time taken. ... 42 5 m / sec So , Time taken = Distance Speed = 8 0 . 42 / 5 = 8 × 5 0 . 42 sec = 95 .
If the denominators are not the same, then you have to use equivalent fractions which do have a common denominator . To do this, you need to find the least common multiple (LCM) of the two denominators. To add fractions with unlike denominators, rename the fractions with a common denominator. Then add and simplify.
https://www.coolmath4kids.com/math-help/fractions/adding-and-subtracting-fractions-different-denominators
For example:
1/2 + 1/3
We need to find something called the least common denominator (LCD)... It's really just the LCM of our denominators, 2 and 3.
The LCM of 2 and 3 is 6. So, our LCD 6.
We need to make this our new denominator...
Change the 1/2:
1 x 3 over 2 x 3 = 3/6
Change the 1/3:
1/2 + 1/3 = 3/6 + 2/6
Now we can do it!
(3+2)/6 = 5/6
