A triangular sign has base 5 dm and height 9 dm. What is its area?
Note
Use the triangle area rule: half of base × height. First 5 × 9 = 45, then half is 22.5 dm².
A triangular sign has base 5 dm and height 9 dm. What is its area?
Use the triangle area rule: half of base × height. First 5 × 9 = 45, then half is 22.5 dm².