Question

17

ABC is an isosceles right-angled triangle.
A
=bxh/2

The area of the triangle is 98 cm²
Work out the value of x.
4x cm
B
4x cm
C

Answer 1

base = 4x

height= 4x

area = 1/2 x 4x x 4x

98= 1/2 x 4x x 4x

98 = 1/2 x 16x^2

98 = 8x^2

x^2 = 98/8

x^2 = 12.25

x =
`\sqrt12.25`

x = 3.5

Hope it helps you :)