24oC
20oC
34oC
30oC
Correct answer is A
t ∝ h, t = 20, h
t = ? h = 60
t = kh where k is constant
20 = 50k
k = \(\frac{20}{50}\)
k = \(\frac{2}{5}\)
when h = 60, t = ?
t = \(\frac{2}{5}\) × 60
t = 24oC
An equilateral triangle of side √3cm is inscribed in a circle. Find the radius of the circle. ...
Evaluate \(\frac{0.36 \times 5.4 \times 0.63}{4.2 \times 9.0 \times 2.4}\)...
Simplify: \((\frac{16}{81})^{\frac{1}{4}}\)...
Find the value of sin 45° - cos 30° ...
If the variance of 3+x, 6, 4, x and 7-x is 4 and the mean is 5, find the standard deviation...
Two ladders of length 5m and 7m lean against a pole and make angles 45° and 60° with the gro...
Given that x ≅ 0.0102 correct to 3 significant figures, which of the following cannot be the ac...
The sum of the angles of regular polygon is 2520o. How many sides does the polygon have?...