Answer:
9.9
Step-by-step explanation:
The area of a triangle is given by
A = 1/2 x*x
A = 1/2 x^2
49 = 1/2 x^2
Multiply each side by 2
98 = x^2
Take the square root of each side
sqrt(98) = sqrt(x^2)
sqrt( 2*49) = x
7 sqrt(2) = x
9.899494937 =x
To the nearest tenth
9.9 =x
