D
use the formula speed = wavelength x wave frequency
Triangle D
Because the Pythagorean Theorem is only used with a RIGHT triangle
Just do what is says to do i can answer it for u but im not sure if it will be correct
i have did this problem before tho
<h3>
Answer: 300 square feet</h3>
Explanation:
The trapezoid has area of
A = h*(b1+b2)/2
A = 6*(10+18)/2
A = 84
The rectangle is 18 ft by 12 ft, which leads to an area of 18*12 = 216 sq ft.
Adding the two sub-areas gets us: 84+216 = 300
The total area of the house-shaped figure is 300 sq ft.
