ISAIAH THOMAS SECONDARY SCHOOL
MATHEMATICS 60%
FORM THREE
Area, Perimeter, circumference of shapes
Name: _________________________________________________
Date:________________________
SECTION A: Multiple Choice
Instruction: Circle the letter which represents the correct answer.
(10 marks)
1. What is the circumference of the semi-circle of radius 7 cm? Take π as 3.142
A.
B.
C.
D.
22 cm
36 cm
44 cm
77 cm
2. What is the area of the L-shaped room below?
A.
B.
C.
D.
40 cm²
45 cm2
48 cm2
50 cm2
3. What is the area of the trapezium?
A.
B.
C.
D.
30 cm2
40 cm2
50 cm2
80 cm2
4. The area of a square is 64 cm2. What is the perimeter of the square
A.
B.
C.
D.
32 cm
48 cm
128 cm
64 cm
5. Find the circumference of a circle with a diameter of 10 mm. C=πd, where π=3.142
A.
B.
C.
D.
30.20 mm
31.42 mm
32.55 mm
34.13 mm
6. If the perimeter of a square is 50cm, then its side is
A.
B.
C.
D.
12.5 cm
25 cm
150 cm
200 cm
7. The area of a rectangle with length 25 cm and width 12 cm is
A.
B.
C.
D.
300 sq. m
74 cm
300 sq. cm
74 sq. cm
8. The area of the shaded region in the shape below
A.
B.
C.
D.
106 m2
100 m2
44 m2
106 cm2
SECTION B: Problem Solving
Instruction: Show all workings neatly where necessary.
Use π = 3.14
Some formulas to remember
Circumference of circles C=2πr or πd
1
Circumference of semicircle 2 πd + d
Area of circles A=πr2
Area of square
1
Area of semicircles A = 2 πr2
1. A circular pizza has a diameter of 40cm. Calculate the
a. Circumference of the pizza
b. Area of the pizza
4 marks
2. Find the area of the given shapes below
a.
4 marks
3. Calculate.
a. The perimeter only
b.
4 marks
b. The area only
4. Calculate the area of the shaded region. Use π = 3.14
a.
b.
c.
e.
d.
15 marks