Work Shown:
The area of the rectangle is 40*30 = 1200 square cm
Note how we have 4 circles along the horizontal dimension which is 40 cm, so each diameter is 40/4 = 10 cm, and the radius is 10/2 = 5 cm
Each circle has an area of pi*r^2 = pi*5^2 = 25pi
There are 4*3 = 12 circles, so the circle areas combine to 12*25pi = 300pi
Using a calculator, we find that 1200 - 300pi = 257.522203923062 approximately. Round this however you need to.
Answer:
258 cm²
Step-by-step explanation:
A = 40*30 = 1200 cm²
Ac = 12×πr² = 12×3.14×25 = 942 cm²
Apwr = A - Ac = 1200cm² - 942cm² = 258 cm²
Everything is correct except for the second one and the ones you checkmarked.
Answer: Umm there’s no pic..
9 1/2
