Question

5. Two parallel sides of a trapezium are 30cm and 45cm and other sides
13cm and 13cm. Find the area of trapezium.
Triangle whose sides ar 12cm 130cm and 15 am​

Answer 1

Answer:

i think you are asking two saperate questions maybe

one is of triangle and another one is of trapezium.

so here is the answer

trapezium = 404.25cm

triangle = not possible (because when you use Euclid's formula in this than you get a negative no. and this shows that it is not a triangle)

Step-by-step explanation:

Here's the explanation of trapezium:

we are given;

parallel sides = 30 and 45

and other non parallel equal sides = 13 ( I will use the unit sign in the last, don't worry)

so here we will form a triangle inside the trapezium with the given things

we will draw a third side parallel to the one of the non parallel equal side, then we can see that there formes an isosceles triangle.

Then we will find the perpendicular formed by dividing the isosceles triangle.

After finding the perpendicular of isosceles triangle than we can find the are of trapezium, because dormula of are of trapezium is 1/2×(sum of parallel sides) × height

height is the only perpendicular we find in isosceles triangle.

in triangle,

h = 13, b = 7.5, p = ?

formula = (h)²= (b)²+(p)²

= 13²= 7.5²+p²

= 169-53.75 = p²

= 10.78 = p

now p(perpendicular) = h(height)

so we put all in formula trapezium

1/2(45+30)×10.78

75×5.39

404.25cm

here is your answer