#1**+2 **

Volume of a sphere is 4/3 pi r^3 = 4/3 (3.14) (4^3) REMEMBER to use the** RADIUS** !!

= 267.9 cm^3

The second one:

You'll have to draw that one out....then break it into squares , rectangles and triangles to calculate the area

Then the last one:

V = 4/3 pi r^3 = 4/3 * 3.14 * 7.5^3 = 1766.25 in^3

ElectricPavlov
Mar 3, 2018

#2**+1 **

Second one

The first four points form a parallelogram with a width of 6 and a height of 4.....so its area is

(6 * 4) = 24 units^2

The last three points form a triangle with a base of 6 and a height of 2

So...its area is (base * height) / 2 = 6 * 2 / 2 = 6 units^2

So.....the total area is (24 + 6) = 30 units^2

CPhill
Mar 3, 2018