Two cylinders of same radii 14 cm- and heights 20 cm- 25 cm are placed one upon another then the T-S-A -Total Surface Area- of the shape formed-

Question

Two cylinders of same radii 14 cm- and heights  20 cm- 25 cm are placed one upon another then the T-S-A -Total Surface Area- of the shape formed-

Toppr Admin · Accepted Answer

Letting the cylinders to be hollow-Now the newly made cylinder has radius -r-14 cm and height -h-20-25-45 cm-Now total surface are of newly formed hollow cylinder is 2-x3C0-rh cm 2-88-xD7-45-3960 cm2-

Two cylinders of same radii $14$ cm, and heights $20$ cm, $25$ cm are placed one upon another then find the T.S.A (Total Surface Area) of the shape formed.

Letting the cylinders to be hollow.
Now the newly made cylinder has radius $(r) = 14$ cm and height $(h) = 20 + 25 = 45$ cm.
Now total surface are of newly formed hollow cylinder is $2 π r h$ cm $^{2} = 88 \times 45 = 3960$ cm $^{2}$ .

Two cylinders of same radii 14 cm, and heights 20 cm, 25 cm are placed one upon another then find the T.S.A (Total Surface Area) of the shape formed.

Letting the cylinders to be hollow.Now the newly made cylinder has radius (r)=14 cm and height (h)=20+25=45 cm.Now total surface are of newly formed hollow cylinder is 2πrh cm 2=88×45=3960 cm2.

Two cylinders of same radii $14$ cm, and heights $20$ cm, $25$ cm are placed one upon another then find the T.S.A (Total Surface Area) of the shape formed.

Letting the cylinders to be hollow.
Now the newly made cylinder has radius $(r) = 14$ cm and height $(h) = 20 + 25 = 45$ cm.
Now total surface are of newly formed hollow cylinder is $2 π r h$ cm $^{2} = 88 \times 45 = 3960$ cm $^{2}$ .