Question

Calculati aria unui patrat cu latura de :
a) 5 cm b)4,7 cm c)3 intregi si 1 pe 2 cm

Answer 1

a)5 cm

A=(5 cm)^2=25 cm^2

b)4,7 cm

A=(4,7 cm)^2=22,09 cm^2

c)3 1/2 cm

3 1/2=3*2+1/2=7/2 cm=3,5 cm

A=(3,5 cm)^2=12,25 cm^2

Answer 2

a)

${5}^{2} = 25$

b)

${4.7}^{2} = 22.09$

c)

$3 \frac{1}{2} = \frac{7}{2} = ( \frac{7}{2} )^{2} = \frac{49}{4}$