The square of a room is 22.25m2 calculate its length

Eneo la mraba ($A$) linahesabiwa kwa kuzidisha urefu wa upande ($s$) mara yenyewe:

$$A = s^2$$

Tunapewa eneo $A = 22.25 \text{ m}^2$. Ili kupata urefu $s$, tunahitaji kutafuta mzizi wa pili wa eneo:

$$s = \sqrt{A}$$ $$s = \sqrt{22.25 \text{ m}^2}$$

$$s \approx 4.71699 \text{ m}$$

Ukizungusha hadi sehemu mbili za desimali:

$$s \approx 4.72 \text{ m}$$

Urefu wa chumba ni:

$$\boxed{\text{4.72 m}}$$

Tatizo la 2: Eneo la pembetatu

Eneo la pembetatu ($A$) linahesabiwa kwa kutumia formula:

$$A = \frac{1}{2} \times \text{msingi} \times \text{urefu}$$

Kutoka kwenye picha, msingi ni $20 \text{ m}$ na urefu ni $15 \text{ m}$.

$$A = \frac{1}{2} \times 20 \text{ m} \times 15 \text{ m}$$

$$A = 10 \text{ m} \times 15 \text{ m}$$ $$A = 150 \text{ m}^2$$

Eneo la pembetatu ni:

$$\boxed{\text{150 m}^2}$$