Question

find the height of the solid circular cylinder of total surface area 660 cm sq and radius 5cm. question 6 in photo

Answer 1

r = 5cm
TSA = 660 cm sq.
i.e., 2*22/7*5(5+h) = 660
          5+h = 660*7/2*22*5 = 21cm
              h = 21-5 = 16 cm





Hope it helped

Answer 2

Answer:

16.019 cm.

Step-by-step explanation:

Radius of Cylinder = 5 cm

Total surface area of cylinder = $2\pi r(h+r)$

                                                 = $2 \times 3.14 \times 5(h+5)$

Since we are are given that  total surface area 660 cm sq

So,  $660=2 \times 3.14 \times 5(h+5)$

$660=31.4(h+5)$

$\frac{660}{31.4}=h+5$

$21.0191082803=h+5$

$21.0191082803 -5=h$

$16.019=h$

Thus the height of the cylinder 16.019 cm.