Work out the surface area of this sphere 2.6cm

A = 27.04π cm²

Step-by-step explanation:

The surface area of a sphere of radius r is A = 4πr²

If the radius, r, is 2.6 cm, then the surface area here is A = 4π(2.6 cm)², or

A = 4π(6 .76 cm²) or

A = 27.04π cm²

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,

the smallest possible measurement of the width is 14 feet

step-by-step explanation:

let's assume length of parallelogram is 'l'

width of parallelogram is 'w'

the perimeter of a parallelogram must be no less than 40 feet

so, we get

we are given

length of parallelogram is 6 feet

so,

l=6

we can plug it

now, we can solve for w

subtract both sides by 12

divide both sides by 2

and we get

so,

the smallest possible measurement of the width is 14 feet