A triangular sign has base 7 dm and height 9 dm. What is its area?
Note
Use the triangle area rule: half of base × height. First 7 × 9 = 63, then half is 31.5 dm².
A triangular sign has base 7 dm and height 9 dm. What is its area?
Use the triangle area rule: half of base × height. First 7 × 9 = 63, then half is 31.5 dm².