What is the total surface area for the composite figure? (You only want the area of the outer sides)
8 cm
11.3 cm
25 cm
16 cm

Haruka hiked several kilometers in the morning. she hiked only 66 kilometers in the afternoon, which was 25% less than she had hiked in the morning. how many kilometers did haruka hike in all?

For what values of a is the sum of the fractions 2a−1 / 4 and a−1 /3 positive?

The weight of a rock sample is measured to be 2.5 ponds. what is the percent of error in the measurement?