Aflati lungimea liniei mijlocii a unui trapez cu inaltimea de 8cm si aria de 40 cm2

Test ARII: 9-Question Practice Test (Grade 7)

9 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Aria unui triunghi dreptunghic cu catetele de 6cm si 10 cm este:

$18\ cm^2$

$60\ cm^2$

$30\ cm^2$

$15\ cm^2$

2.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Aria unui patrat cu perimetrul de 36 cm este:

$144\ cm^2$

$81\ cm^2$

$36\ cm^2$

$48\ cm^2$

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Aria unui romb cu diagonalele de 6cm si 9 cm este:

$54\ cm^2$

$15\ cm^2$

$27\ cm^2$

$20\ cm$

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Aria unui paralelogram cu baza de 10 cm si inaltimea de 7 cm.

$17\ cm^2$

$35\ cm^2$

$34\ cm^2$

$70\ cm^2$

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Aria unui triunghi cu o latura de 12 cm si inaltimea corespunzatoare de 5,5 cm

$17,5\ cm^2$

$66\ cm^2$

$45\ cm^2$

$33\ cm^2$

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Aria un dreptunghi cu latimea de 2,4 cm si lungimea de 5 ori mai mare este:

$12\ cm^2$

$28.6\ cm^2$

$28.8\ cm^2$

$14.8\ cm^2$

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Aria unui triunghi echilateral cu

$l=3\sqrt{2}\ cm$

$18\sqrt{3}cm^2$

$36\sqrt{3\ }cm^2$

$9\sqrt{3}\ cm^2$

$36\sqrt{2}cm^2$

8.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Aria unui romb cu perimetrul de 42 cm si inaltimea de 10 cm este:

$105\ cm^2$

$10.5\ cm^2$

$105.5\ cm^2$

$420\ cm^2$

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Test ARII

Aria unui triunghi dreptunghic cu catetele de 6cm si 10 cm este:

Aria unui patrat cu perimetrul de 36 cm este:

Aria unui romb cu diagonalele de 6cm si 9 cm este:

Aria unui paralelogram cu baza de 10 cm si inaltimea de 7 cm.

Aria unui triunghi cu o latura de 12 cm si inaltimea corespunzatoare de 5,5 cm

Aria un dreptunghi cu latimea de 2,4 cm si lungimea de 5 ori mai mare este:

Aria unui triunghi echilateral cu l=32 cml=3\sqrt{2}\ cml=32​ cm

Aria unui romb cu perimetrul de 42 cm si inaltimea de 10 cm este: