I can't see the whole question
7.79cm It is an equilateral triangle so it has 3 equal sides. That means each side is 9cm. <span>
Now draw a line from the top of the equilateral triangle to the base, and dividing it into two. You will have made two smaller triangles, with sides 9, 4.5, and h (the one you want to find).
A line drawn from the apex of an equilateral triangle to the midpoint of the base is perpendicular to the base, so you can use Pythagoras' Theorem!
4.5^2 + h^2 = 9^2
h = sqrt(9^2 - 4.5^2)
Therefore, the height is 7.79cm (2 decimal places)</span><span>
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Answer:
150 square meters
Step-by-step explanation:
Assuming that this field is triangular, we can multiply the two shortest sides together, and then divide by 2, because that is the formula for the area of a right triangle.
So 15 times 20 is 300
300 divided by 2 is 150
So we can estimate the area to be 150 square meters.
(Upon solving further, we realize that this is a right triangle, so our initial estimation is the exact area)
Thus the third option is the correct answer.
Answer:
Its enlargement
Step-by-step explanation:
Its enlargement!
hope it helps
