1. Use a net to find the surfacearea. 1. 2. Use a formula to find the surfaceare
ID: 3089906 • Letter: 1
Question
1. Use a net to find the surfacearea. 1. 2. Use a formula to find the surfacearea. 3. 3. The height of a prism is 5 cm. Its rectangularbases have 3-cm and 9-cm sides. Find its surface area.- 32 cm2
- 57 cm2
- 98 cm2
- 174 cm2
- 32 cm2
- 57 cm2
- 98 cm2
- 174 cm2
- 32 cm2
- 57 cm2
- 98 cm2
- 174 cm2
Explanation / Answer
although the method used is correct.....there was amathematical error : it should be 8*6+7*6+7*10+8*7 :48 +42+70+56 -----> he had 56 should be42.....therefore the answer should be 216 not 230 :
3) :
The height of a prism is 5 cm. Its rectangularbases have 3-cm and 9-cm sides. Find its surfacearea. : SA=174---->2(3*9)+2(3*5)+2(5*9)=54+30+90=174cm2 : so the answer is D the last one
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