Find the surface area of a cylinder to the nearest tenth of a square unit use 3.14 for pi radius is 4.9ft h is 7.8ft

38.2
65.4
286.2
390.8

Solution:

The surface area of cylinder is given as:

Where, r is the radius and h is the height

From given,

r = 4.9 feet

h = 7.8 feet

Substituting the values we get,

Thus the surface area of a cylinder to the nearest tenth is 390.8 square feet

if x decreases by 4 then y increases by 10

step-by-step explanation:

the correct answer option is (2x-3)(2x+3).

step-by-step explanation:

we are given the following expression and we are to factorize it:

we are to find such factors that when multiplied they give a result of 36 (9 x 4 = 36) and when added they give a result of 0.

the two such factors of 36 are negative six and postive six.

factorizing the given expression to get:

therefore, the correct factorization of is (2x-3)(2x+3).