Answer: 25 in²
Step-by-step explanation: To find the area of a triangle, start with the formula for the area of a triangle which is shown below.

In this problem, we're given that the base is 10 inches
and the height is 5 inches.
Now, plugging into the formula, we have
.
Now, it doesn't matter which order we multiply.
So we can begin by multiplying (1/2) (10 in.) to get 5 inches.
Now, (5 in.) (5 in.) is 25 in².
So the area of the triangle is 25 in².
Answer: U=39
Step-by-step explanation:
6=u -15/4
cross multiply ✖
U-15=6*4
U-15=24
U=24+15
U=39
Answer:
What Can I help you with?
Step-by-step explanation:
Answer:
5cm = r
Step-by-step explanation:
The area of a circle is given by
A = pi r^2
78.5 = 3.14 r^2
Divide each side by 3.14
78.5/ 3.14 = r^2
25 = r^2
Take the square root of each side
sqrt(25) = sqrt(r^2)
5 = r