Answer:
Supriya found the Perimeter of the bedroom.
Step-by-step explanation:
Supriya plans to hang the string of twinkle lights all the way around her walls. This is equivalent to making a boundary around the walls using the twinkle lights.
In geometry the boundary of a figure refers to its Perimeter. So, this means the measurement which Supriya found was the Perimeter of her room. Perimeter is defined as the sum of all the sides of a figure. Room is a 4-sided figure i.e. a quadrilateral, and most likely it will be in shape of a rectangle. Perimeter of a rectangle is calculated as:
Perimeter = 2 ( Length + Width )
So, the perimeter of Supriya's bedroom is 36 meters.
The perimeter is the total of adding all of the sides together. A rectangle has 2 lengths and 2 widths. The equation would be:
P = 2l + 2w or P = l + l + w + w
Since you know the perimeter, you can plug it into the equation
53 = 2l + 2w
You can divide the 2 on both sides
26.5 = l + w
l = w + 2.3 because the length is 2.3 meters longer/more than the width. You can substitute (w + 2.3) for "l" in the equation. So instead of:
26.5 = l + w
It will be:
26.5 = (w + 2.3) + w
26.5 = w + 2.3 + w
Subtract 2.3 on both sides
24.3 = w + w
24.3 = 2w
Divide 2 on both sides
12.1 = w
The width is 12.1 meters
Answer:
The heights, in cm, of 50 students are recorded and used to draw the cumulative frequency graph shown below. 50
Step-by-step explanation:
