Question

Oblicz pole trójkąta
c) a 11,5dm i h= 0,2,m
d) a= 3 cm i h= 3/4 -ułamek

Answer 1

P trójkąta = a*h/2

c)
a = 11,5dm
h = 0,2m = 2dm

P = 11,5dm*2dm/2 = 11,5dm²

d)
a = 3cm
h = 3/4cm = 0,75cm

P = 3cm*0,75cm/2 = 2,25cm²/2 = 1,125cm²

Answer 2

C)
p=1/2*a*h
p=1/2*11,5*2=11,5 dm2
d)
1/2*3*3/4=1,125cm2