Answer:
Your answer is correct. What is it that you need help on?
Step-by-step explanation:
L = 15m = 1500cm
b= 30cm
h= 4m= 400cm
So, total volume of the wall= l×b×h
= 1500×30×400= 1,80,00,000 cm^3
Now, volume of one brick= 22×12.5×7.5= 2062.5 cm^3
Volume of wall containing only bricks= total volume of the wall - volume of wall containing mortar
= 1,80,00,000 - (1,80,00,000 × 1/12)
= 1,65,00,000 cm^3
So, no. of bricks = volume of wall containing bricks ÷ volume of one brick
= 1,65,00,000 ÷ 2062.5
= 8000 bricks.
Because all the angles in a triangle must add up to 180 degrees, we can set the sum of the angles to 180
(4W-6) +W +W=180
6W-6=180
6W=186
W=31
Hope this helps!
Answer: The average speed is 3 mph.
Step-by-step explanation:
You would divide the distance by the amount of time it would take to get there. So in this case,
1.5/0.5=3
Answer: 36 units²
Step-by-step explanation: In this problem, we are asked to find the area of a square that has a perimeter of 24.
Remember that the formula for the
perimeter of a square is 4 times a side.
Therefore, since the perimeter of the given square is 24,
we have 24 = 4s and dividing both sides by 4, 6 = s.
Now, remember that that the formula for area of a square is s² and since the length of a side of the given square is 6, we have (6)² or 36.
So the area of a square hat has a perimeter of 24 units is 36 units².
I have also shown my work below.