A triangular sign has base 13 dm and height 9 dm. What is its area?
Note
Use the triangle area rule: half of base × height. First 13 × 9 = 117, then half is 58.5 dm².
A triangular sign has base 13 dm and height 9 dm. What is its area?
Use the triangle area rule: half of base × height. First 13 × 9 = 117, then half is 58.5 dm².