Saved Bookmarks
| 1. |
If (x+1) and (x-1) are faction of ax^3+x^2-2x+b find a and b |
| Answer» GIVEN :-A curved surface area of a right circular cylinder is 4.4 m² and the radius of the base of the cylinder is 0.7 m.To FIND :-What is the height of the cylinder.Formula Used :-{\purple{\boxed{\large{\bold{C.S.A\: of\: cylinder\: =\: 2{\pi}rh}}}}} C.S.Aofcylinder=2πrh where,r = Radiush = HeightSolution :-Let, the height of the cylinder be hGiven :Curved surface area = 4.4 m²Radius = 0.7 mAccording to the question by using the formula we get,⇒ \sf 2 \times \dfrac{22}{7} \times 0.7 \times h =\: 4.42× 722 ×0.7×h=4.4⇒ \sf 2 \times \dfrac{22}{7} \times \dfrac{7}{10} \times h =\: \dfrac{44}{10}2× 722 × 107 ×h= 1044 ⇒ \sf 2 \times 22 \times h =\: 442×22×h=44⇒ \sf h =\: \dfrac{44}{22 \times 2}h= 22×244 ⇒ \sf h =\: \dfrac{\cancel{44}}{\cancel{44}}h= 44 44 ➠ \sf\bold{\red{h =\: 1\: m}}h=1m\therefore∴ The height of the cylinder is 1 m . | |