What is the area of a rectangle with length 10 cm and width 6 cm?

Eneo = Urefu $\times$ Upana.

$$\text{Eneo} = 10 \text{ cm} \times 6 \text{ cm}$$

$$\text{Eneo} = 60 \text{ cm}^2$$

Jibu sahihi ni C.

12. Kiasi cha tufe huhesabiwa kwa kutumia fomula $V = \frac{4}{3}\pi r^3$. Ikiwa rediasi ya tufe ni 3 cm, kiasi chake ni kipi? (Tumia $\pi = 3.14$)

$$V = 4 \times 3.14 \times \frac{27}{3} \text{ cm}^3$$ $$V = 4 \times 3.14 \times 9 \text{ cm}^3$$ $$V = 12.56 \times 9 \text{ cm}^3$$ $$V = 113.04 \text{ cm}^3$$

Jibu sahihi ni B.

13. Eneo la uso wa mchemraba wenye urefu wa upande wa 4 cm ni lipi?

Eneo la Uso = $6s^2$, ambapo $s$ ni urefu wa upande.

$$\text{Eneo la Uso} = 6 \times (4 \text{ cm})^2$$

$$\text{Eneo la Uso} = 96 \text{ cm}^2$$

Jibu sahihi ni C.

14. Alama zilizopatikana na mwanafunzi katika masomo matano ni: 70, 80, 90, 75, 85. Median ya alama ni ipi?

Kwa seti ya nambari isiyo na idadi sawa, median ni nambari ya kati.
Katika seti hii kuna nambari 5, hivyo nambari ya 3 ni median.

$$\text{Median} = 80$$

Jibu sahihi ni B.

Majibu ya mwisho: 11. C) $\boxed{\text{60 cm}^2}$ 12. B) $\boxed{\text{113.04 cm}^3}$ 13. C) $\boxed{\text{96 cm}^2}$ 14. B) $\boxed{\text{80}}$