Answer:
1. 66 square cm
2. 286 square inches
3. 238 squarecm
4. 38.465 square m
5. 169 square cm
Step-by-step explanation:
1. A=½bh
A=½×11×12
A=½×132
A=66 square cm
2. A=b1+b2×h÷2
A=8+18×22÷2
A=26×22÷2
A=572÷2
A=286 square inches
3. A=b×h
A=14×17
A=238 square cm
4. A=πr²
A=3.14×3.5×3.5(half of the diameter/radius)
A=10.99×3.5
A=38.465 square m
5. A=S×S
A=13×13
A=169 square cm
hope it helps you☺️
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Answers & Comments
Answer:
1. 66 square cm
2. 286 square inches
3. 238 squarecm
4. 38.465 square m
5. 169 square cm
Step-by-step explanation:
1. A=½bh
A=½×11×12
A=½×132
A=66 square cm
2. A=b1+b2×h÷2
A=8+18×22÷2
A=26×22÷2
A=572÷2
A=286 square inches
3. A=b×h
A=14×17
A=238 square cm
4. A=πr²
A=3.14×3.5×3.5(half of the diameter/radius)
A=10.99×3.5
A=38.465 square m
5. A=S×S
A=13×13
A=169 square cm
hope it helps you☺️