a scientist has a mystery element that she wants to identify by using its properties these properties include its freezing point
she collected data about the elements freezing points (horizontal line)and display it on the graph below use the graph above to determine the freezing point of the element (horizontal line) which of these elements is the mystery element the freezing point of each element is listed by its name cobalt (1495) silicon (1430) iron (1539) nickel (1455)
1 answer:
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Answer:
Total area to be painted in gold = 24000 cm²
Step-by-step explanation:
Total height of the stairs = 120 cm
Total standing stairs = 4
Therefore, height or width of one standing stair as shown in the picture,
=
= 30 cm
Length of every stair has = 100 cm
Every horizontal and vertical stair has the same area.
Area of one stair = Length × Width
= 100 × 30
= 3000 cm square
There are 4 horizontal and 4 vertical similar stairs to be painted in gold.
Total area to be painted in gold = 8 × Area of one stair
= 8 × (3000)
= 24000 cm²
Total area to be painted in gold = 24000 cm²
