Question 266666
1.What is the surface area that has a diameter of 3 inches and height of 5 inches?
{{{SA = 2*pi*r^2 + pi*r*h}}}
the diameter = 3, so radius = 1.5
{{{SA =2 *pi*(1.5)^2 + pi*1.5*5}}}
so
{{{SA =  4.5pi + 7.5pi}}}
or
{{{SA = 12pi}}}
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2.What is the total square feet of a rectangle that is 12 ft x 8ft x11ft?
{{{SA = 2*(lw + lh + wh)}}}
we get
{{{SA = 2*(12*8 + 12*11 + 8*11)}}}
then
{{{sa = 2*(96+132+88)}}}
{{{sa = 2(316)}}} or {{{sa = 632}}}
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3.A rectangular swimming pool has a length of 18 ft, width of 10 ft, and a depth of 4ft. What is the volume of water the pool can hold?
{{{V = lwh}}}
or
{{{v = 18*10*4}}}
which is
{{{V = 720}}} cu. ft.