The composite solid was formed by joining a square pyramid and a rectangular prism. What is the surface area of the composite solid?

A rectangular prism with a length of 10 feet, width of 10 feet, and height of 6 feet. A square pyramid with triangular sides with a height of 7 feet.
[Not drawn to scale]
360 square feet
380 square feet
410 square feet
480 square feet

I believe the answer is C

Step-by-step explanation:

I took the test

Hope this helps!!

:o)

c i think (((;

Step-by-step explanation:

took the test.

answer is 8x+24

area of vanessa's patio = length × width

given, length = (3x² + 5x + 10)

width = (x² - 3x - 1)

area of vanessa's patio = (3x² + 5x + 10)(x² - 3x - 1)

= 3x²(x² - 3x - 1) + 5x(x² - 3x - 1) + 10(x² - 3x - 1)

= 3x⁴ - 9x³ - 3x² + 5x³ - 15x² - 5x + 10x² - 30x - 10

= 3x⁴ - 4x³ - 8x² - 35x - 10

hence, expression of vanessa's patio = (3x⁴ - 4x³ - 8x² - 35x - 10)