A ganza is a percussion instrument used in samba music.
a. Find the surface area of each of the two labeled ganzas in terms of π , rounded to the nearest thousandths and as a decimal, round to the nearest whole number.

The weight of the smaller ganza is 1.1 pounds. Assume that the surface area is proportional to the weight. What is the weight of the larger ganza to the nearest tenth of a pound?

The weight of the larger ganza is about
pounds.

1. to solve this problem, you must apply the formula for calculate the surface area of a cylinder, which is:     a=2πr²+2πrh    a is the surface area of the cylinder.  r is the radius of the cylinder.  h is the height of the cylinder.    2. let's call the smaller ganza "a" and the other one "b".    3. the surface area of the ganza "a" (aa) is:     aa=2πr²+2πrh    r=diameter/2  r=3.5 cm/2  r=1.75 cm    h=10 cm    4. when you substitute these values into the formula, you obtain:     aa=2πr²+2πrh  aa=2π(1.75 cm)²+2π(1.75 cm)(10 cm)  aa=41.125π cm²    aa=129.0 cm²      5. the surface area of "b (aa) is:     ab=2πr²+2πrh    r=5.5 cm/2  r=2.75 cm    h=24.5 cm    6. when you substitute these values into the formula, you obtain:     ab=2πr²+2πrh  ab=2π(2.75 cm)²+2π(2.75 cm)(24.5 cm)  ab=149.875π cm²  ab=471.0 cm²