Question

Does anyone know some basic geometry lol...I need help

Answer 1

128.52

Explanation:

to find the area of a triangle is base times height divided by two, so in this case you'd do six times six which is thirty six and divide it by two which equals eight.

to find the area of a rectangle you do base times height, here you'd do six times nine which is fifty four.

to find the area of a half circle you do pi radius squared and after that you get an answer of fifty six point five two

lastly you add all the numbers up - 18+54+56.52 = 128.52 and that should be your answer

hope this helps x

Answer 2

The area of the figure is 86.13

Explanation:

First, solve for the area in the triangle using the equation A = h*b/2

We have the height and the base which is 6. Plug in for the equation and solve.

A = 6*6/2

A = 36/2

A = 18

Next, solve the area for the rectangle using the equation A = w*l

The width is 6 and the length is 9. Plug in for the equation and solve.

A = 6*9

A = 54

And finally, solve for the area of the triangle using the equation A = pi*r^2

We know that pi is around 3.14 and the diameter is 6. We know that a diameter is twice the length of the radius, so we can divide the diameter by 2 and get the radius.

r = 6/2

r = 3

Now plug in the equation and solve.

A = 3.14*3^2

A = 3.14*9

A = 28.26

Since this is the area of a full circle, we need to divide the area of it by 2 to get the area of a half circle.

A = 28.26/2

A = 14.13

Next, add them all up and you will get your answer.

18 + 54 + 14.13 = 86.13

Hope this helps.