Page 21 - Mathematics Teaching Material Two Dimensional Figure

Mathematics Teaching Material Two Dimensional Figure

D. EXAMPLE

1. The area of the building below is...

Answer :

Area rectangle =
2
L=
2
Dik : a = 18 cm
t = 5 cm

Then:

L=
2
L= 18 5
2
L = 9 cm x 5 cm
L = 45 cm 2

The area of the triangle is 45 cm 2

2. The area of the building below is...

Answer :

Diketahui : diagonal 1 = d1 = 15 cm
diagonal 2 = d2 = 30 cm

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