This mathematics problem involves applying core mathematical principles and formulas. Below you will find a complete step-by-step solution with detailed explanations for each step, helping you understand not just the answer but the method behind it.

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Hapa kuna suluhisho la maswali yako:
Sehemu ya 1: Kuhesabu Eneo la Jumla la Uso wa Mchoro
Mchoro unaonyesha mche mrefu wa pembetatu (triangular prism). Eneo la jumla la uso linajumuisha maeneo ya nyuso mbili za pembetatu na nyuso tatu za mstatili.
Step 1: Tafuta urefu wa pembetatu ya msingi. Pembetatu ya msingi ina pande 10 cm, 10 cm, na 12 cm. Ni pembetatu pacha (isosceles triangle). Tunaweza kutumia theorem ya Pythagoras kupata urefu () wa pembetatu.
Step 2: Hesabu eneo la nyuso mbili za pembetatu. Eneo la pembetatu moja ni .
Step 3: Hesabu eneo la nyuso tatu za mstatili. Kuna nyuso mbili za mstatili zenye vipimo 10 cm na 8 cm. Kuna uso mmoja wa mstatili wenye vipimo 12 cm na 8 cm.
Step 4: Hesabu eneo la jumla la uso. Eneo la jumla la uso ni jumla ya maeneo yote ya nyuso. Eneo la jumla la uso wa mchoro ni .
Sehemu ya 2: Kuzungusha Nambari kwa Tarakimu Tatu Muhimu
a) 4.9852 Tarakimu tatu za kwanza muhimu ni 4, 9, 8. Tarakimu ya nne ni 5, kwa hivyo tunazungusha tarakimu ya tatu (8) kwenda juu.
b) 0.078172 Sifuri za mwanzo si muhimu. Tarakimu tatu za kwanza muhimu ni 7, 8, 1. Tarakimu ya nne ni 7, kwa hivyo tunazungusha tarakimu ya tatu (1) kwenda juu.
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Hapa kuna suluhisho la maswali yako: Sehemu ya 1: Kuhesabu Eneo la Jumla la Uso wa Mchoro Mchoro unaonyesha mche mrefu wa pembetatu (triangular prism).
This mathematics problem involves applying core mathematical principles and formulas. Below you will find a complete step-by-step solution with detailed explanations for each step, helping you understand not just the answer but the method behind it.