Question

PLEASE HELP ASAP!!!!!!!

Answer 1

40 cm² = B

178,127514 ≈ LA

218,127514 ≈ SA

Explanation:

First and foremost, since we were not given a height, to find the height, take one-third of the area base [area base in this case is ws, since it is a rectangular base]:
`(1)/(3)(40) = 13 (1)/(3)`

This is your height.

Now, to find the lateral area, we use this formula:

`l \sqrt{((w)/(2))^(2) + {h}^(2)} + w \sqrt{( (l)/(2))^(2) + {h}^(2)} = L. A.`

Plugging these numbers into this formula will give you an approximate value of 178,127514.

Then you add the lateral area to the base area to get your surface area:

`40 + 178,127514 = 218,127514`

I am joyous to assist you anytime.