Question

Can anyone help me with this area of sector activity? I'm not sure how to solve this. I will reward brainliest! Please tell me how you got your answer as well! this is 10th grade geometry

Answer 1

Answer:

Jenny has worked out the area of the whole circle using the formula π × r² where r is the radius length. She has assumed π is 3.14 which leads to her working of 3.14 × 10² = 314 units². She has to divide the total area by 4 to calculate the sector area.

Answer 2

Let's check

• Angle is 90°
• Radius is 10

Area of sector

• Ø/360×πr²
• 90/360×pi(10)²
• 1/4×π(100)
• 25π
• 78.5units²