The height of the tower roughly equals 41.421 meters.
Answer:
81
Step-by-step explanation:
<u>Step 1: Round to the nearest whole number</u>
81.46
<em>81</em>
<em />
Answer: 81
Using Pythagorean theorem c^2=a^2 + b^2, we can find the missing side b.
Put values in equation.
18^2 = 8^2 + b^2
324=64+b^2
Subtract 64 from both sides
260= b^2
Take square root.
2√65=b
or
b=16.12
Answer: b=2√65 Radical form. or b=16.12 Decimal form.
Answer:
418
Sn = ∑ 3 +4(n-1)
n=1
Step-by-step explanation:
3,7,11,15,.....1671
a1 =3
d = 4 (7-3=4)
an = a1 + d(n-1)
an = 3 +4(n-1)
We need to determine the last term
1671 = 3 +4(n-1)
Subtract 3
1671-3 = 3-3 +4(n-1)
1668 = 4(n-1)
divide by 4
1668/4 = 4(n-1)/4
417 = n-1
Add 1 to each side
418 = n
418
Sn = ∑ a1 +d(n-1)
n=1
418
Sn = ∑ 3 +4(n-1)
n=1
Answer:
10cm
Step-by-step explanation:
the formula for an area of a trapezium:
where a and b are the parallel sides and h is the height. equating what we have:
simplify the numerator by adding 19.8 and 7.2=27
multiply both sides by 2
divide both sides by 27
the height is 10cm
