First, I would multiply 17cm by 22cm to get 374, which is the area of the rectangle. Then to find the area of the triangle, I would multiple 12cm by 19cm and the divide that by half to get 114. I would then add 374+114 to get 488cm as your answer.
Answer:
8% increase
Step-by-step explanation:
The length after the increase:
30 x 1.1 = 33cm
The width after the increase:
20 x 1.05 = 21cm
New perimeter:
2(33 + 21) = 108 cm^2
Old perimeter:
2(30 + 20) = 100 cm^2
Percentage increase of area:
108 / 100 = 1.08 = 8% increase
When you graph the equations, both equations represent the same line. If a system has no solution, it is said to be inconsistent . The graphs of the lines do not intersect, so the graphs are parallel and there is no solution.
Answer:
12 gallons
Step-by-step explanation:
The perimeter of the room is ...
20 ft + 10 ft + 20 ft + 10 ft = 60 ft
Then the area of the walls is the product of this and their height:
area = (60 ft)(8 f) = 480 ft²
The number of gallons required is ...
(480 ft²)/(40 ft²/gal) = 12 gal
12 gallons of paint are required.
