It would be 16,350 rounded.
Answer:
i) 441π cm² ≈ 1385.4 cm²
ii) 196π cm² ≈ 615.8 cm²
Step-by-step explanation:
The areas of circles with radius 21 cm or diameter 28 cm can be found using the appropriate area formula.
<h3>i)</h3>
The formula for the area of a circle based on its radius is ...
A = πr²
When the radius is 21 cm, the area is ...
A = π(21 cm)² = 441π cm² ≈ 1385.4 cm²
<h3>ii)</h3>
The formula for the area of a circle based on its diameter is ...
A = (π/4)d²
When the diameter is 28 cm, the area is ...
A = (π/4)(28 cm)² = 196π cm² ≈ 615.8 cm²
Answer:
Step-by-step explanation:
1/2 bh
1/2 x 7 x 9
= 31.5 cm^2
Answer:
Step-by-step explanation:
The graph shows A RELATION ONLY. Why? because for '25 minutes,' there is more than one y value. So what is shown is only a relation.