Question

Practice set 1.1
gle.
1. Base of a triangle is 9 and height is 5. Base of another triangle is 10 and height
is 6. Find the ratio of areas of these triangles.
5​

Answer 1

Answer:

First we should calculate the area of first triangle with formula 1/2×base×height =45/2.

Again we calculate the area of second triangle with same formula 1/2×base×height = 30 .

The ratio of area of these triangles = 45/2/30 = 3:4

Answer 2

Answer:

Let ABC and PQR be two right triangles with AB ⊥ BC and PQ ⊥ QR.

Given:

BC = 9, AB = 5, PQ = 6 and QR = 10.

∴A(△ABC)/A(△PQR)

=AB×BC/PQ×QR

=5×9/6×10

=3/4