Question

9. The base and height of a triangle are in the ratio 4:5. If the area of the triangle is 90 sq m, find
the measures of its base and height.
10) In a parallelogram ABCD, the length of the altitude corresponding to
AB is 8 cm. What is the length of the altitude corresponding to BC?
IC
8 cm
M
20 cm
Area Between Two Rectangles​

Answer 1

Step-by-step explanation:

9. ratio = b:h

=4:5

area of Δ = 90 m^2

ar Δ = 1/2 * b *h

90 = 1/2 * 4x * 5x

90= 1/2 * 20x^2

90 * 2 /20 = x^2

18/2 = x^2

9 = x^2

3 = x

base = 4x = 12 cm

height = 5x = 15 cm