MATH 5 Q4 WEEK 1

The formula for the area of a parallelogram can be used to derive the formula

for the area of a circle. Is this correct?

• (A) No

• (B) Yes

• (C) Maybe

Which will resemble the shape formed if the identical sectors of a circle are

arranged in one row?

• (A) triangle

• (B) trapezoid

• (C) parallelogram

Half of the circle goes to the top of the parallelogram, and the other half goes

to the bottom. What part of a parallelogram is this?

• (A) side

• (B) base

• (C) height

Which is equal to the base if a circle is made into parallelogram?

• (A) r

• (B) πxr

• (C) b × h

The sectors of a circle are arranged to resemble a parallelogram. Which part

of the circle approximates the height of the parallelogram?

• (A) radius

• (B) diameter

• (C) circumference

The sectors of a circle are arranged to resemble a parallelogram. Which part

of the parallelogram approximates half of the circumference?

• (A) base

• (B) area

• (C) height

If the formula for finding the area of a parallelogram is A = b x h, what is the

formula for the area of a circle?

• (A) A = 2 x π x r

• (B) A = π x d

• (C) A = π x r²

Kaye will compute for the area of a circle using the formula A = π x r². If the

given is the diameter of a circle, what should be computed first?

• (A) base

• (B) radius

• (C) circumference

What is the area of a circle with a 5-meter radius? (Use π = 3.14)

• (A) 31.4 m²

• (B) 78.5 m²

• (C) 314 m²

What is the area of a circle with a radius of 2 m? (Use π = 3.14)

• (A) 6.28 m²

• (B) 12.56 m²

• (C) 50.24 m²