This is the trignometry problem. A right triangle has a hypotenus of 30 meters a

Question

This is the trignometry problem. A right triangle has a hypotenus of 30 meters and a shortest side of 15 meters. Calculate the value of the interior angle that is formed by these two lines. Consider an aluminium sphere of radius 80.0 centimeters. If the density of aluminium is 2.69 gram/cm^3. Calculate the volume of the aluminium sphere. Consider a circle. The circumference of a circle is equal to 2 pie R, Where R is the radius of the circle. If the radius of the circle is increased by a factor of 3, then the circumference is.

Explanation / Answer

22) Correct option is (a)

x= 15 m , L = 30m

cos(theta) = x/L =15/30

theta = 60 degrees

23) Correct option is (d)

r = 80 cm

V = (4/3)pi*r^3 = (4/3)(3.14)(80)^3

V = 2.14*10^6 cm^3

24) correct option is (d)

L =2p*R

if R is increased by 3

Then circumference increased by 3

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