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easy
normal
Simple polygon area problems - easy
Submit a problem here.
Problem №1
Find (in cm
2
) the area of a square with side
a=5cm
.
Solution:
The area of a square is found by using the formula
.
Problem №2
If the side of a square is
a=1cm
, find its area (in
).
Solution:
The area of a square is given by the formula
.
Problem №3
If the sides of a rectangle are
a=3cm
and
b=5cm
, determine its area (in
).
Solution:
The area of a rectangle is given by the formula
.
Problem №4
If the sides of a rectangle are
a=2cm
and
b=7cm
, determine its area (in
.
Solution:
The area of a rectangle is given by the formula
.
Problem №5
In a triangle
ABC
,
AB=5cm
and
CH=8cm
, where
. Determine the area of
ABC
(in
).
Solution:
Since
=>
CH
is the altitude to
AB
. The area of a triangle is given by the formula
Problem №6
In a triangle
ABC
, the side
BC=4cm
and the altitude to it is
AH=3cm
. Determine the area of
ABC
(in
).
Solution:
The area of a triangle is determine by the formula
Problem №7
In a right triangle
ABC
(
), the sides
AC
and
BC
have respective lengths
7cm
and
8cm
. Determine the area of
ABC
in
.
Solution:
The area of a right triangle is given by the formula
if
AC
and
BC
are catheti - in our case they are. So the area is
Problem №8
The area of a square is
. Find the length of its side in centimeters.
Solution:
Since
=>
, so
.
Submit a problem here.
Problem text:
Solution:
Answer:
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