Question

the area of a triangle with base 5 cmand whose height is equal to that of a rectangle with lenghth 5 cm and area 20 cm2 is.......

Answer 1

Area of triangle=1/2*b*h
lenght of rectangle = height of triangle
area of rectangle is 20 cm²
l*b=20
l*5=20
l=20/5
l=4cm
l=h
h=4cm
area of triangle=1/2*5*4
=20/2
=10cm²

Answer 2

given b=h
Check the attachment